A group of scientists are studying the genome of the Drosophila Fly. In
these flies, the allele for long wings is dominant over the allele for short
wings. What phenotype would a heterozygous genotype have?
A. Long wings
B. Short wings
C. LI
D. LL
Answer:
A. Long wings
Explanation:
Long wings - LL or Ll
Short wings - ll
Heterozygous genotype means one dominant and one recessive allele. So, the genotype would be Ll.
Therefore, the phenotype would be long wings.
Hope that helps.
Select the statements that explain why duplication is a driving force for evolution and the generation of new genes.
a. Genes duplicate and then diverge from the original sequence to create multigene families.
b. Duplication of a chromosomal region always results in novel gene functions.
c. Changes in gene function can occur when random fixed mutations are introduced into a new chromosomal environment.
d. Duplicated genes provide extra copies of DNA that are not constrained by an essential function.
Answer:
The correct statements are - a, c, and d.
Explanation:
Gene duplication delivers new genes and families of genes due to some arbitrary changes over some undefined time frame.gene duplication at various locations can create new genes with either advantageous or unsafe impacts. Arbitrary changes can prompt an additional duplicate of DNA bringing about dosage compensation where the deciding mutations can be lost.
Gene and genome duplications give a source of hereditary material for mutation, float, and selection to work on, making new evolutionary opportunities conceivable. Accordingly, many have contended that genome duplication is a prevailing element in the development of the evolution of complexity and diversity.
Thus, the correct answer is - a, c, and d.
What must occur for protein translation to begin?
A water molecule must be added to the protein chain.
A peptide bond must form between subunits of mRNA.
The amino acid Cys must be picked up by tRNA.
The codon AUG must be identified
The correct answer is D) The codon AUG must be identified.
What must occur for protein translation to begin is that the codon AUG must be identified.
The process starts when the 5AUG or start codon is identified. In the polypeptide chain, the 5AUG is the first amino acid. We are talking about Transition, the process when the genetic code in an RNA molecule has to be decoded in a polypeptide chain in order to deliver an amino acid sequence. In this complex transition system, there are important components included such as ribosomes, transfer RNA, and mRNA.
Answer:
D) The codon AUG must be identified.
Explanation:
edge 2020
Which of the following is/are (a) pioneer(s) of population genetics?
Group of answer choices
Haldane
Wright
Fisher
all of these
All of these
Fisher, Wright, and Haldere were all pioneers of population genetics
Why will you NOT get sick from a vaccine? A. The pathogens it contains are dead or weakened. B. The antibodies you produce after getting the vaccine kill the injected pathogens. C. It does not contain any pathogens. D. It is medicine that kills pathogens, so it would kill any infection as well.
Answer:
A.
Explanation:
The vaccine is dead/weakened pathogens injected to cause antibodies. These antibodies will recognize the pathogens if they see them and fight them off.
Hope this helped! Good luck!
What effects would you expect uncontrolled celiac disease to have on children? How do these effects relate to what is shown in the model?
Answer:
Explanation:
Because the villi get damaged, they can’t absorb enough nutrients. So, children might have slow or stalled growth and development because they don’t get enough nutrients.
Answer:
Because the villi get damaged, they can’t absorb enough nutrients. So, children might have slow or stalled growth and development because they don’t get enough nutrients.
Explanation:
PLATO answer
Classify each nutrient as a macronutrient or as a micronutrient
Answer:
Macro: Phosphorous, Protein, Fat, Carbohydrates
Micro: Vitamin A, Sodium
Explanation:
Macronutrients are nutrients that are needed in large amounts. Micronutrients are needed in smaller amounts.
) Recall what you know about crossing over, independent assortment, and random joining of sex cells during sexual reproduction.
Answer:
Crossing over is the process of interchange of genetic information among non-sister chromatids of homologous chromosome pairs during meiosis (specifically during synapsis in prophase I). During this process, the synaptonemal complex enables the interchange of chromosome fragments between non-sister chromatids through crossing over. Moreover, in sexual reproduction, the zygote diploid cell can be generated by the random joining of fully differentiated haploid gametic cells (male and female gametes). The combination of random joining with the phenomenon of crossing over is known to considerably increase the genetic variation of the resulting offspring. After zygote formation, the successive cycles of cell divisions during embryonic development will develop an organism that during its adult stage will reproduce via sexual reproduction.
a) List three examples of ruminant livestock. b) Describe how ruminant cattle digest food? c) Why do cattle produce more methane than other types of animals?
Answer:
a)Ruminants include cattle, sheep, goats, buffalo, deer, elk, giraffes and camels. These animals all have a digestive system that is uniquely different from our own. Instead of one compartment to the stomach they have four. Of the four compartments the rumen is the largest section and the main digestive centre.
b)Digestion in ruminants occurs sequentially in a four-chambered stomach. ... The mass is finally passed to the true stomach, the Abomassum, where the digestive enzyme lysozyme breaks down the bacteria so as to release nutrients.
c)The difficult-to-digest grass ferments in the cows' stomachs, where it interacts with microbes and produces gas. Thus,cattle produce more methane than other types of animals.
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"Allowing selected molecules to move in and out of the cell" is a function of what?
a) prophase
b) cell membrane
c) eukaryotes
d) cytoplasm
Answer:
Cell membrane
Explanation:
"The cell membrane functions as a semi-permeable barrier, allowing a very few molecules across it while fencing the majority of organically produced chemicals inside the cell."
Answer:
Cell membrane
Explanation:
In his deletion mapping experiments, Benzer coinfected bacteria with one phage that contained a point mutation and one phage that contained a deletion mutation. Assume that the point mutation and deletion mutation are not in overlapping regions of the phage genome. What phage recombinants would you expect if a crossing-over event occurred between the regions of the two mutations?
Answer:
The correct answer would be - there will be wild type and double mutant (contains both the deletion mutation and the point mutation)
Explanation:
It is mention that the deletion mutation and point mutation are non-overlapping or no overlapping regions in the phage genome. A crossing-over event between the regions of these two mutations would get wild-type which means there would be neither point mutation nor deletion mutation and other would be a double mutant that contains both mutation - the point mutation and the deletion mutation.
Thus, the correct answer is - there will be wild type and double mutant (contains both the deletion mutation and the point mutation)
Which correctly describes a process that occurs in bacteria?
In binary fission, the two new cells that are formed are susceptible to the same antibiotic.
In conjugation, bacterial DNA is transferred from one bacterium to another by a replicating virus
In transduction, the cells that are formed are susceptible to the same antibiotic.
In transformation, a special sex pilus is required to connect two bacterial cells.
Answer:
In binary fission, the two new cells that are formed are susceptible to the same antibiotic.
Explanation:
Binary fission is the most common type of asexual reproduction in bacteria. Binary fission involves the duplication of the genetic information (i.e., bacterial DNA) and the subsequent separation into two cells during cytokinesis. It is a type of prokaryotic asexual reproduction where replication and segregation are simultaneous processes. Binary fission does not involve the incorporation of new genetic material, thereby the resulting daughter cells will inherit the same genetic information of the parental bacterium, being in this case susceptible to the same antibiotic.
Answer:
A the top answer is correct on ENG 2022
Explanation:
Facilitated diffusion of glucose into a muscle cell Facilitated diffusion of glucose into a muscle cell
A) Yes; sodium ion cotransport is required for facilitated diffusion of glucose.
B) No; sodium ion cotransport is required for simple diffusion of glucose, but not for facilitated diffusion of glucose.
C) No; sodium ion cotransport is required for active transport of glucose, but not for facilitated diffusion of glucose.
Answer: Option A.
Yes; sodium ion cotransport is required for facilitated diffusion of glucose.
Explanation:
Glucose is transported in the cell through facilitated diffussion because it is a large molecule and it will very difficult to be transported across the cell membrane through normal diffusion, so it is transported across the the concentration gradients.
sodium ion cotransport is required for facilitated diffusion of glucose because both glucose and sodium cannot be transported through simple diffussion so they pass through specific channels in the hydrophobic barrier formed by membrane proteins. Thereby crossing the membrane, the diffusion is facilitated by the channels but glucose and sodium must move against a concentration gradients tone transported.
b. If we were to dig up this plant, what type of root system should we expect to find? Describe what the roots of this plant should look like according to your identification in part a above addressing the presence or absence of the following parts: • Tap root • Lateral root • Fibrous root system • Trichomes
Answer:
Tap root
Explanation:
A large majority of dicotyledonous plants are capable of producing tap roots, which is part of a primary rot system that grows in the vertical direction - downwards. Sometimes it serves the function of storing food, as in the case of dandelions.
One main role that the trichomes (fine hair-like outgrowth) play is to defend the plant against certain insects.
Weight loss is a common goal among many aduls, and losing woight can be very difficult. There are countiess approaches to consider, but an often-overlooked area is the role of an individuals evironment. Environmental factors can be a good place to start for people looking to Iose weight or prevent weight gain. Which of these statements describe environmental factors that can make it difficult for an individual to loose weight or maintain weight loss?
to lose weight or meintain weight loss?
a. decreased portions sizes in restaurarts and movie theaters.
b. increased use of personal vehicles, telephones, and computers.
c. increased number of meals eaten outside the home
Answer:
c. increased number of meals eaten outside the home
Explanation:
Environment is the surrounding of living organism, where he gets to survive by meeting its needs.
Environmental factors are factors in the environment that are associated to growth and development example is temperature.
The environment an individual stays have a great influence on the physical expression and character of the individual.
For a fat person the environment had played out his role which should be controlled to achieve a significant weight loss. Increasing number of meals eaten outside the house is one major factor that would not allow such individual to loose weight. Intake of food should be greatly controlled and watched to achieve weight loss.
An arthropod has all the following characteristics except:
a. three embryonic germ layer
b. pseudocoelom
c. bilateral symmetry
d. protosome development
e. true tissues
Answer:
b. pseudocoelom
Explanation:
A pseudocoelom is a false body cavity of some invertebrates which occupies the space localized between the mesoderm and the endoderm of the gut. This false cavity is found in nematodes.
Arthropods exhibit:
1- Bilateral symmetry because both opposite sides of the body are similar,
2- they are protostomes because the blastopore becomes the mouth during embryonic development,
3- they have true tissues because tissues are formed by groups of cells which share a common function, and finally,
4-arthropods are triploblastic because they are formed by three germ embryonic layers (endoderm, mesoderm and ectoderm).
You observed many sand hill cranes on your walk. Two sand hill cranes flapped their wings and hopped up and down when you walked on the path near where their bright orange baby stood. You observed a(n) _______________.
Answer:
This question lacks options, the options are:
A) symbiosis
B) ecosystem
C) community
D) population
E) biosphere
The answer is D) Population
Explanation:
In ecology, a population refers to the group of living organisms of the same species living together in the same habitat and have the ability to interbreed i.e. mate and reproduce fertile offsprings.
In this question where many sandhill cranes (large flying birds) were observed in their habitat. In addition to the fact that the group of sandhill cranes are found to be living together, they were also observed to be reproducing with other members of the population. This was portrayed by the observation of two sandhill cranes hopping up and down around their bright orange baby. This shows that members of the population are capable of mating and reproducing fertile offsprings.
This observation i.e group of sandhill cranes living together and interbreeding, best shows that the observed is a POPULATION of sandhill cranes.
Group of sandhill cranes living together, best explains that you observe a population of sandhill cranes.
Population:
In ecology, a population is a group of living organisms of the same species have the ability to interbreed and usually found in a similar habitat.
Here,
Sandhill cranes were observed in their habitat. Sandhill cranes are found in groups, living together. So it is most likely to see a population of sandhill cranes.
Therefore, group of sandhill cranes living together, best explains that you observe a population of sandhill cranes.
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In Lake Victoria (the largest freshwater lake in Africa), researchers recently found that in one cichlid species, male fishes with brighter red coloration maintain large territories. Red males are at an advantage because female cichlids tend to choose males with brighter color and larger territory size. Assuming that red coloration is heritable, what do you expect would occur if some females of this species began to prefer male cichlids with blue coloration?
Answer:
The population of cichlids with blue coloration increases.
Explanation:
If the female prefers blue colored cichlids, so they mate with each other and increase occurs in the population of blue colored cichlids and with the passage of time bright colored cichlids decrease in number due to less reproduction with female cichlids. So those cichlids becomes dominant in the lake to which more female mate and those which receive less female are less in number and having lower territory size.
Cichlid is the fish variety found diversely in South America and Africa. They are primarily herbivores and feed on plants and algae. Cichlids mate both with single or multiple partners.
Speciation would occur if some females of this variety began to prefer male cichlids with a blue coloration. The population of blue colored fishes will increase.
The explanation for the answer is:
Female mate choice plays a major role in speciation. They play important role in differentiation and speciation.After several generations of mating with the blue parent, all the offspring will become blue.Change in the recurrence of variation or the genetic drift where red-coloured fishes are preferred will result in the fixation.This female choice would act as a barrier to the gene flow.The mutation rate in genes coding for the colour will increase.
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Describe the sizes of the sun, moon and Earth models given to the participants. Before embarking on the actual activity, what did the participants learn as a result of the size of the models?
Answer:
(A). (1).SUN AND EARTH= the distance between the sun and the earth is about 0.5 miles.
(2). MOON AND SUN: the distance between the moon and the sun is about 400m.
(B). Kindly check Explanation.
Explanation:
PART A:
(GIVEN TO THE PARTICIPANTS) DESCRIPTION OF THE DISTANCES SIZES OF;
(1).SUN AND EARTH= the distance between the sun and the earth is about 0.5 miles.
(2). MOON AND SUN: the distance between the moon and the sun is about 400m.
PART B = what did the participants learn as a result of the size of the models?
The participants learnt if they so wish to make the size of the moon to be equal to that of the sun, the people or the participants have to move or go back because initially to them(participants) they thought that if are able to move the moon to the sun, it will be equal.
how do animals reproduce..can someone explain in detail please
Answer:
Asexual reproduction in animals occur through fission, budding,e.t.c.
Sexual reproduction starts with the combination of a sperm and egg which is called FERTILISATION.
Explanation:
The reproductive parts in animals produce gametes that fuse and form ZYGOTE.
Okay, hope it helps.
Answer:
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Explanation:
Animals should be matured to reproduce.
The animals can reproduce sexually, that involves fusion of sperm and ova inside the body.
Few animals can also reproduce asexually, asexual reproduction does not involve the fusion of gametes, the genetic material is combined to produce an offspring that has inherited the genes of the parent.
The picture to the right shows Meiosis 2, which is responsible for creating: A. Haploid daughter cells with unique chromosomes. B. Diploid daughter cells with unique chromatids. C. Diploid daughter cells with unique chromosomes. D. Haploid daughter cells with unique chromatids. Reset Selection
Answer:
D. Haploid daughter cells with unique chromosomes.
Explanation:
This is because during Mitosis 2 the sister chromatids within the two daughter cells separate, form four new haploid gametes.
D. Haploid daughter cells with unique chromatids are responsible for creating.
What does meiosis 2 create?Meiosis II starts with two haploid parent cells and ends with four haploid daughter cells, maintaining the number of chromosomes in each cell.
What are the products of meiosis and meiosis II?Thus, the products of meiosis II are four haploid cells that contain a single copy of each chromosome. In mammals, the number of viable gametes obtained from meiosis differs between males and females. In males, four haploid spermatids of similar size are produced from each spermatogonium.
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g Glycogen Phosphorylase is phosphorylated by ____________________. Glycogen Synthase Kinase Casein Kinase Protein Kinase G Phosphorylase Kinase Protein Kinase A
Answer:
Phosphorylase kinase
Explanation:
Phosphorylase kinase is a type of regulatory protein kinase which helps in the process of glycogen breakdown.
It sends signals and the process of phosphorylating occurs which then helps in the activation of glycogen phosphorylase and subsequent breakdown of glycogen in the body. This makes phosphorylase kinase the right option.
after staining what should be the color of vegetative cells
Answer:
See below
Explanation:
As a result of staining the cells, while all of the cells now appear pink, the vegetative cells show some area that has not been stained pink (perhaps because they did not take up the dye). This is a clear indication that they are in their vegetative state as opposed to the normal cell growth stage as demonstrated by the remainder of the cells.
If a small drop of tiny particles such as pollen grains are dropped into a drop of water on a microscope slide, they will appear to vibrate and spread out. The primary reason for this is
Answer:
The primary reason is that the pollen grains are being struck by water molecules that move in different directions. These strikes fluctuate and sometimes are uneven.
Explanation:
This vibration and spread out of molecules in water is called Brownian Motion. It is the result of the collision of small particles of water with big particles of pollen. As the particles of water move randomly hitting different sides of the pollen particle, at times, there will not be a coordinated movement, but as the movement of water particles is random, there will be moments when one side of the pollen particle will collide with more water particles, when this happens there is an unbalanced force that makes the pollen particle moves in a direction.
HELP!! PLS O.o Looking at the heat circulation in the ocean, what might happen to it if large amounts of cold water are added in the Polar Regions as glaciers melt? (3 points) Based on your response above, what effect could this have on the climate in your area?
Answer:
The warm upper waters towards the poles from the tropic is done by surface circulation. If large amounts of cold water are added in the Polar regions as glaciers melt then the hot water cannot flow to the poles, the cold water will make the water very dense, which won’t allow warm upper waters to flow.
The effect it would have in the climate of my area is that it will increase the temperature of the local areas because of the rise in temperature of the surface ocean water.
Mike is studying the phylogenetic tree for big cats. A big cat phylogenetic tree is shown. A bracket goes to clouded leopard and to another bracket. That bracket goes to 2 additional brackets. One bracket goes to tiger and snow leopard. The other bracket goes to janguar and another bracket. The other bracket has lion and leopard. He made several statements about the tree. Which statement is not true? The leopard is more closely related to the jaguar than to the snow leopard. The leopard is more closely related to the tiger than to the clouded leopard. The leopard is more closely related to the snow leopard than to the clouded leopard. The leopard is more closely related to the tiger than to the snow leopard.
Answer:
The leopard is more closely related to the snow leopard than to the clouded leopard.
Explanation:
Hope it helps.
Answer:
C
Explanation:
The Answer is C my fellow Brainly users
which best describes the relationship between two species and a niche?
Answer:
Parasitism
Explanation:
If two species, regardless the type of species are living in the same niche they would be competing for the same resources. This would lead to one of the species killing the other or possibly going extinct.
Answer:
Two species cannot occupy the same niche in the same habitat.
Explanation:
I just did it on ed. and it said I was right.
16. Figure it shows the digestive system
С
D
Answer:
Is there any picture or diagram to go with this question?
Polysaccharides are polymers of monosaccharides. Homopolysaccarides are made up of only one type of monomer, whereas heteropolysaccharides are composed of at least two different kinds of monomers.
Are starch, glycogen, cellulose, and chitin classified as homopolymers or heteropolymers?
A. All four polysaccharides are homopolymers.
B. All four polysaccharides are heteropolymers.
C. Starch is a heteropolymer, whereas chitin, cellulose, and glycogen are homopolymers.
D. Chitin is a heteropolymer, whereas starch, cellulose, and glycogen are homopolymers.
Answer:
Option A
Explanation:
All four types of polysaccharides are homopolymers ie they are made up of repeating units of only one type of monomers.
Starch, glycogen and cellulose are made up of repeating monomeric units of glucose with the number of glucose units and the different linkage types different these molecules. E.g the linkage between glucose units in glycogen is alpha 1-4 linkages and in cellulose, we have glucose in beta 1-4 linkages.
In chitin, a derivative of glucose is present in repeating units, here, we have N-acetyl-D-glucosamine in beta 1-4 linkages.
some flowering plants are pollinated by honeybees at some time in the past honeybees evolved the ability to see ultraviolet radiation some flowers have evolved to produce ultraviolet markers on their pedals that direct honeybees to the reproductive parts of the flower what is this example of?
Answer:
Coevolution
Explanation:
Coevolution refers to the mechanism where two or more species interact by the evolutionary process of natural selection. The mechanism of coevolution was mentioned by Darwin to explain the existing interactions among flowering plants and insects, in a similar manner to the example above described. Examples of coevolution also include the race between pathogenic organisms and the immune responses or the emergence of resistance in pathogens that affect genetically modified (originally resistant) crop varieties.