Answer:
la selección natural es el mecanismo principal por el cual la evolución ocurre
Explanation:
Charles Darwin fue un naturalista inglés que propuso la teoría de la evolución o 'descendencia con modificación' mediante el mecanismo de selección natural. Acorde a esta teoría, la selección natural se define como el mecanismo selectivo de reproducción diferencial de los individuos mejor adaptados a su ambiente. La variabilidad es el la materia prima sobre la cual la selección natural actúa, seleccionado aquellos individuos que presentan combinaciones fenotípicas y genotípicas más adaptadas para sobrevivir en un ambiente en particular. Los individuos de una población que son 'superiores adaptativamente' poseen más chances de sobrevivir y reproducirse, y por lo tanto tienen también más probabilidades de transmitir sus genes a la siguiente generación.
The soil has certain microbes that interact with the roots of plants in a symbiotic relationship. Which organism is harmed from this relationship?
Answer:
No organisms
Explanation:
This is because the kind of symbiotic relationship between plants root and microbes is mutualism. In this relationship both organism s benefit and non is harmed. The microbes make nutrients available for the root, it increase root permeability and also root metabolism while the roots provide home for the microbes and Al's derives food.
what happens to the light coming out of a convex lens
Outline the process of the Carbon Cycle.
Answer:
Carbon Cycle Definition
Carbon cycle is the process where carbon compounds are interchanged among the biosphere, geosphere, pedosphere, hydrosphere, and atmosphere of the earth.
Carbon Cycle Steps
Following are the major steps involved in the process of the carbon cycle:
Carbon present in the atmosphere is absorbed by plants for photosynthesis.
These plants are then consumed by animals and carbon gets bioaccumulated into their bodies.
These animals and plants eventually die, and upon decomposing, carbon is released back into the atmosphere.
Some of the carbon that is not released back into the atmosphere eventually become fossil fuels.
These fossil fuels are then used for man-made activities, which pumps more carbon back into the atmosphere.
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In at least 200 words explain how DNA replicates
Answer: Replication is the process by which a double-stranded DNA molecule is copied to produce two identical DNA molecules. Replication occurs in three major steps: the opening of the double helix and separation of the DNA strands, the priming of the template strand, and the assembly of the new DNA segment. During separation, the two strands of the DNA double helix uncoil at a specific location called the origin. Several enzymes and proteins then work together to prepare, or prime, the strands for duplication. Finally, a special enzyme called DNA polymerase organizes the assembly of the new DNA strands. The following description of this three-stage process applies generally to all cells, but specific variations within the process may occur depending on organism and cell type.
~i hope this helps :)
Answer:
QUESTION:
ANSWER:
Replication is the process by which a double-stranded DNA molecule is copied to produce two identical DNA molecules. DNA replication is one of the most basic processes that occurs within a cell. Each time a cell divides, the two resulting daughter cells must contain exactly the same genetic information, or DNA, like the parent cell. To accomplish this, each strand of existing DNA acts as a template for replication.
The initiation of DNA replication occurs in two steps. First, a so-called initiator protein unwinds a short stretch of the DNA double helix. Then, a protein known as helicase attaches to and breaks apart the hydrogen bonds between the bases on the DNA strands, thereby pulling apart the two strands. As the helicase moves along the DNA molecule, it continues breaking these hydrogen bonds and separating the two polynucleotide chains
Meanwhile, as the helicase separates the strands, another enzyme called primase briefly attaches to each strand and assembles a foundation at which replication can begin. This foundation is a short stretch of nucleotides called a primer
After the primer is in place on a single, unwound polynucleotide strand, DNA polymerase wraps itself around that strand, and it attaches new nucleotides to the exposed nitrogenous bases. In this way, the polymerase assembles a new DNA strand on top of the existing one
Explanation:
A lot more than just 200 words sorry.
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Which organs are shaped like beans and are located just below your ribs, in the middle of your back?
Answer: Your kidneys are bean-shaped organs, each about the size of your fist. They are located near the middle of your back, just below the rib cage.
Explanation:
Answer:
Kidneys
Explanation:
The kidneys are two bean-shaped organs, each about the size of a fist. They are located just below the rib cage, one on each side of your spine. Healthy kidneys filter about a half cup of blood every minute, removing wastes and extra water to make urine.
what's the fear of lizards Called?
Answer:
Herpetophobia is a fear of reptiles. People with herpetophobia are most often afraid of reptiles like snakes and lizards. ... If you have a specific phobia, you feel an overwhelming sense of fear or anxiety about something. There are many different types of specific phobia.
Explanation:
old: Agree or Disagree--The daughter cells created during mitosis are identical to the parent cell.
old: Agree or Disagree--Mitosis is used to increase genetic variation in organisms.
Est the four steps of mitosis below in order:
How are haploid cells like our gametes created? What is the difference between meiosis and mitosis?
Notes Meiosis
Meiosis is the process of creating
haploid cells.
(n).
1. Each species has a fixed set of
2. Body cells (also known as
(2n).
3. Sex cells (also known as
have
sets of chromosomes, also called
have
set of chromosomes, also called
Answer:
1) agree: the daughter cells are all identical as theyre made asexually
2)disagree: the cells are clones of one another so it limits genetic variation
3) the diffference between mitosis and meiosis is that mitosis is asexual with one parent and each daughter cell is genetically identical. with meiosis, the cells created can be different from one another as theyre produced with 2 parent cells. so meiosis creates genetic variation while mitosis does not
Explanation:
6. The three main regions of the brain that receive and process information are the cerebrum, the cerebellum, and the ____________________________.
In flies, red eye color (Xa) is a sex-linked recessive trait. Black eyes (XA) are the normal colored eyes for flies. What are the chances
that a carrier mom and a black-eyed dad will have (hint: you must use X's and Y's):
a. a red eye male as their next offspring?
b. a black eye female as their next offspring?
2.
3
4.
5 6 7 8 9 10
Answer:
The correct answer is -
a. a red-eye male as their next offspring? = 25%
b. a black eye female as their next offspring? = 25%
Explanation:
The given question says that in flies the red eye color is a sex-linked recessive trait which means it will only appear in the presence of two copies of the recessive allele in females and one copy of recessive allele in male as there is only one copy of X chromosome is present in males the other chromosome is Y.
So, the genotype of carrier mom would be XaXA and normal black eye male would be XAY, then cross between these flies:
XA Y
Xa XaXA XaY
XA XAXA XAY
On the basis of red eye male would be XaY = 1/4 = 25%
and the black eye female would be XAXA = 1/4 = 25%
A population of lowers is separated by an eight-lane superhighwax, Pollen is often camed by the
and across the highway and can pollinate the flowers on the other side of the highway Can speciation
occur in this situanon2
No because the populations are not reproductively isolated
Ne because the populanons are not geographically isolated
Ces because the populations are reproductively isolated
Yes because the populations are geographically isolated
DONE
Fr
Answer:
hi
Explanation:
Answer: A) No, because the populations are not reproductively isolated.
Explanation: :)
Which body system in humans has a similar function to the gills in a fish?
а
b
Circulatory System
Digestive System
Respiratory System
Endocrine System
Od
Answer:
1. respiratory System
Explanation:
Fish exchange gases by pulling oxygen water through their mouths and pumping it over their gills. So Basically, Its Similar to Our Lungs For us to breathe Like Fish.
Body system in humans which has a similar function to the gills in a fish is respiratory system.
What is a gill ?
A gill is a respiratory organ that many aquatic organisms use to extract dissolved oxygen from water and to excrete carbon dioxide.
What is a respiratory system ?The respiratory system is a biological system consisting of specific organs and structures used for gas exchange in animals and plants.
The primary purpose of gills and lungs in humans is to exchange gases, take oxygen in and release carbon dioxide out. Both lungs and gills have a bed of very small blood vessels with thin walls that the gases can easily travel across.To know more about respiratory system here
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Which type of selection is illustrated by these two graphs?
A.) directional
B.) stabilizing
C.) disruptive
D.) natural
Answer:
B
Explanation:
How can a change in genotype affect the phenotype?
Answer:
The genome in which a genotype is found can affect the expression of that genotype, and the environment can affect the phenotype. Genes can also be pleitropic when they affect more than one trait. The single base pair mutation that lead to sickle cell anemia is a classic example.
Answer: population
Explanation: An organism's genotype is the set of genes that it carries. ... However, since an organism's genotype generally affects its phenotype, the phenotypes that make up the population are also likely to change. For example, differences in the genotypes can produce different phenotypes.
I NEEEEEDDDD HELP PLEASE
Answer:
Proteins.
Explanation:
Genes contain instructions to assemble amino acids in proteins.
why do planets take different times to comple an orbit?
What structure is most likely found in both viruses and cells
Answer: capsid
Explanation:
Answer: Caspid
Explanation: Explanation: Protein is the structure that is found in both virus and cells.
What is another type of clean energy?
Which characteristic of living organisms is shown?
Answer:
excretion
Explanation:
In what way does walking help The environment? How does it make you feel about the state of our environment?
Answer: Walking plays an important role in improving our quality of life because it helps protect and improve the living environment and natural resources. ... Communities designed to be walkable have the potential to reduce air pollution and greenhouse gases because people may choose to walk or bike rather than drive. Walking plays an important role in improving our quality of life because it helps protect and improve the living environment and natural resources. Improving the environment in turn brings added health benefits that come, for example, from cleaner air, less traffic noise and fewer road accidents.
Explanation:
Dialysis tubing is permeable to water molecules but not too sucrose. Three dialysis tubes are filled with various solutions and placed in the beakers. Tube 1 contains 100% water, Tube 2 contains a 60% sucrose solution, and Tube 3 contains pure water but is submerged in a 60% sucrose solution.
Question: Which tube will experience the greatest loss of water? Explain your answer using terms such as (hypotonic, hypertonic, isotonic, solute concentration, water concentration, homeostasis) *
Answer:
tube 3
Explanation:
because it contains pure water
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A is correct
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Why is the water cycle important for ecosystems?(1 point) The water cycle helps recycle and transport carbon around the planet. The cycle replenishes the carbon supply of ecosystems. The water cycle uses photosynthesis to make clouds. These clouds make surface water that animals drink to survive in their ecosystem. The water cycle permanently removes water from underground and large bodies of water and transports it to terrestrial ecosystems that need water. The water cycle helps recycle and transport water around the planet. The cycle replenishes the water supply of ecosystems
Answer: The water cycle helps recycle and transport water around the planet. The cycle replenishes the water supply of ecosystems
Explanation:
The water cycle simply refers to how water continuously move within the Earth. It is also called the hydrological circle. Water cycle depicts many processes such as how water evaorates into vapor, how clouds are formed through condensation and then sent back to the Earth as either rain or snow.
Based on the options given, the water cycle helps recycle and transport water around the planet. The cycle replenishes the water supply of ecosystems.
Answer:
The water cycle helps recycle and transport water around the planet. The cycle replenishes the water supply of ecosystems
Explanation:
trust me i did the test
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Which eukaryotic kingdom is least closely related to fungi?
Answer:
Kingdom fungi include mushrooms, yeast, moulds containing filamentous structures called hyphae.
Explanation:
Describe Okasaki fragments.
Answer:
Okazaki fragments are short sequences of DNA nucleotides which are synthesized discontinuously and later linked together by the enzyme DNA ligase to create the lagging strand during DNA replication.
Explanation:
A segment of DNA strand is shown.
3’ ATCGATCCA 5”
Which of these is the correct complementary DNA strand for the segment shown?
A. TACCTAGGA
B. TAGCTAGGT
C. ATCGATCCA
D. ACCTAGCTA
The use of fossil fuels is a concern because it can lead to which of the following?
O increased runoff
O global warming
O polluted waters
Oeutrophication
Answer:
O global warming
Explanation:
The use of fossil fuels is a concern because it can lead to global warming.
Drag each graph to the correct location on the image.
Match the graphs of the skier's potential energy and kinetic energy with the skier's position on the hill.
What you have in the picture is correct. :>
Explanation:I took the test and the correct answer is what you have. :>
Answer:
you got it right!!
Explanation:
i just took the test.
In humans, the allele for brown eyes, B, is dominant over the allele for blue eyes, b. Which combination of alleles shown below could result in a person with blue eyes?a.BBb.bbc.bBd.Bb
Answer:
bb
Explanation:
the only way the recessive trait shows is if the dominant allele isn't present at all otherwise the dominant allele will show
What helps keep moisture in soil and holds roots in place in very windy areas like the Great Plains?
Write a short story about a piece of corn and its journey through the digestive system. It should be in first person. Be creative. Include the following vocab. words and show that you know what they mean:
Mouth/ Oral Cavity
Saliva
Teeth
Chemical Digestion
Mechanical Digestion
Esophagus
Stomach
Stomach Acid
Small Intestine
Large Intestine
Rectum
Anus