12.
Which event occurs in prophase I of meiosis, but not prophase of mitosis?
a. Sister chromatids separate and move to opposite poles.
b. All chromosomes line up in a single row at the center of the cell.
c. Homologous pairs separate and move towards opposite poles of the cell.
d. Homologous chromosomes pair to form a tetrad, and may cross over.
Answers
Answer:
d
Explanation:
The tetrad is formed by synapsis of homologous chromosomes.
Related Questions
A corn field is divided into four parts each part is ‘treated’ with a different fertilizer to see which produces the most corn. What is the dependent variable?
1. Different Fertilizers
2. Corn Production
Answers
Answer:
The correct answer is - 2. corn production.
Explanation:
The dependent variable of a scientific investigation is a variable that depends on the independent variable. It is a variable that is required to check or find the effect of the independent variable and also known as output value that helps to know the effect of input values or independent variable.
In this case, the input value or the independent variable is different fertilizer as it is the only variable that is manipulated by the researcher, and due to this manipulation, the production of the corn affected which is the dependent variable as it depends on the independent variable.
white eyes are recessive in flies. can two red eyed flies have white eyed offspring
Answers
Answer:
Considering that white eyes are a recessive trait in flies, it is possible for two red-eyed flies to have offspring with white eyes only if both are heterozygous for this trait.
Explanation:
For two individuals with dominant phenotype for a trait to have offspring with the recessive trait, both must have a heterozygous genotype.
In the case of the characteristic eye color of the flies :
Red eye (R) is dominant trait. White eyes (r) is the recessive trait.When both parents are heterozygous, their genotype is Rr
In Punnett Square it can see the result of the crossing of these individuals:
Punnett Square :
Rr X Rr
Alleles R r
R RR Rr
r Rr rr
In the offspring, the probabilities are:
50% heterozygous individuals Rr, with red eye phenotype. 25% pure dominant individuals RR, with red eyes 25% individuals with the recessive rr genotype, white eyes.This is the possibility of two red-eyed flies having white-eyed offspring.
What process allows plants, animals, and humans to obtain energy from food?
Answers
Answer:
photosthesisyns
The boll weevil reduced cotton crops by up to 70 percent when the infestation was at its worst.
A. true
B. false
Answers
what parts of the cell do animal cells and plant cells have in common?
Answers
Answer: Nucleus, cytoplasm, mitochondria and a cell membrane
Explanation: All plants and animals share these 4 functions. Plants have 3 extra components: vacuole, chloroplast and cell wall.
GIVEING ALL MY POINTS!!!
Help Me Please Its 8th grade science
Answers
2. The process of producing new organism with only one parent
3. The smallest unit of life, what all living things are/are made of
4. A stimulant is a change in conditions and response is how an organism reacts to the change, eg touching a hot pan and pulling your hand away
Which of the following is not a way that the environment can influence traits?
the presence of toxins in the environment
through epigenetic factors
expression of the dominant trait
through variation in temperature
Answers
Answer:
The correct answer is - expression of the dominant trait
Explanation:
The ineraction of the genes such as dominant and recessive trait are incorporated in the genes and not influence by the environmental condition. These interaction are by the de noo mutations or due to the error in gene expression.
The environmental conditions like toxins cause alteration or mutation in the gene expressions. Temeprature or epigentic conditions are also the factor the can cause influence to traits.
Sex cell is to______
as body cell is to______
A. Gamete; Somatic
B. Somatic; Gamete
C. Sperm; Gamete
D. Neuron: Somatic
Answers
Answer:
A option
Explanation:
please mark me brainliest
Which of the following is NOT needed in Transcription?
A. RNAm
B. DNA
C. Aminoacids
D. Ribosome
Answers
Compared to healthy dog, did the enzymes from Claire’s stomach break down the protein at a low, normal, or high rate?
Answers
Explanation:
Claire is a Great Dane who was losing weight despite the fact that she is eating. Claire doesn't have an increase in appetite and also doesn't have enough energy that is required for her to play.
Claire is losing weight because food the enzymes in her body doesn't break down the food that she eats. When compared to a dog that was healthy, the enzymes from Claire's small intestine broke down protein at a low rate.
Answer:
Norma Rate
Explanation:
In a solution, solute substances naturally tend to move from areas of higher concentration to areas of lower
concentration.
What is the name of this process?
diffusion
passive transport
O equilibrium
osmosis
Answers
Answer:
u still got work
Explanation:
A ball, starting from rest at Position 1, rolls down and then up a curved track towards Position 5. When it reaches Position 5. it rolls back down the track
5
Which description below is most consistent with what you can expect from the ball's motíon?
O The ball will roll as high as Position 1 since energy cannot be created or destroyed
The ball will roll past Position 1 since energy cannot be created or destroyed.
The ball will roll as high as Position 2 since some of the energy will be transformed to heat.
The ball will roll as high as Position 3 since that position has the least potential energy
Answers
Answer: C
Explanation:
Answer:C. When the ball rolls from position 1 to 3, and from Position 5 to 3
Explanation:
Sucrose is a disaccharide. It is made up of
monosaccharides. *
Answers
Answer:
two monosaccharide units linked together to make dysaccharides. Sucrose is a disastride
Explanation:
Give two regions of the body where the bones act as a protection for vital organs. name the bones and the organs they protect.
Answers
Answer:
The skull protects the brain, ribs form a cage that shelters the heart and lungs
Explanation:
The skull protects the brain; the thorax (sternum, ribs and spine) protects the heart, lungs and other viscera (organs within the thorax). The ribs form a cage that shelters the heart and lungs, and the pelvis helps protect the bladder, part of the intestines, and in women, the reproductive organs. Bones are made up of a framework of a protein called collagen, with a mineral called calcium phosphate that makes the framework hard and strong.
Help I will make brainlest.
Answers
Answer:
13. Bacteria
14. Golgi body
Explanation:
14. Golgi body/ apparatus
2. In some dogs the allele for barking is dominant to the allele for non barking. How would a breeder get a strain of pure breeding barkers? Assume he has males and females of both types.
Answers
Answer:
Explanation:
Dominant traits are traits that are visible in the phenotype of an organism.
If barking is dominant in some allele of the dog and it has both male and female then a cross between the male and female with the dominant allele for barking will give a strain of pure breeder barkers.
A recessive allele cannot breed a pure barker because it does not have the allele for barking.
Hence a cross between two individual that dominos of the allele will breed true type.
PLS HELP ASAPBlack hair is dominant over white hair in rabbits. If a heterozygous, black haired male
is crossed with a white haired female, what is the probability that their offspring will
have white hair?
100%
75%
50%
0%
Answers
Answer:
it's either 50% or 75 but its most likey 50%
Explanation:
trusting my gut
A key element recognized by all anthropologists who use the concept of caste is that caste groups are:___________.
a. endogamous
b. exogamous
c. unequal
d. open
Answers
Caste is a group of endogamous people is recognized as a key element by all anthropologists who use the concept of caste.
Caste:
In anthropology caste is defined as a social institution or a group of people that are endogamous means they always marry within the group.
For Example-
In Hindus, there are many caste like Brahmins, and Vashya.
So, In the marriage of the brahmin both families must belongs to the Brahmin caste.
Therefore, caste is a group of endogamous people is recognized as a key element by all anthropologists who use the concept of caste.
To know more about Caste:
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Where do humans obtain essential amino acids?
A. Pasta and bread foods B. Meat/Fish foods
C. Our body makes them D. Foods that contain butter and oils
Answers
Answer:
B.
Explanation:
Answer:
B) meat/fish foods should be the correct answer
please help whoever answers gets brainiest Which organ is found in the excretory system?
A small intestine
B.stomach
C. urethra
D. large intestine
Answers
Sound waves travel much then electromagnetic waves do
Answers
Answer:
That’s an interesting question
Explanation:
Huh let’s think???
A student conducted a comparative investigation to test the hypothesis that different areas of New York City have different levels of air pollution.
Which is a likely benefit of this comparative investigation?
It provides her with a large amount of information about air pollution in New York City.
It provides her with results that are valid for a long time.
It requires that she observe a limited number of variables.
It allows her to learn about the causes and effects of air pollution in major cities.
Answers
Particles that are both solid and liquid, as well as some gases that are suspended in the air, are what produce air pollution. These gases and particles can be produced by factories, volcanoes, wildfires, dust, pollen, and vehicle and truck emissions.
The largest causes of air pollution come from industrial sources, power plants that provide electricity, and fossil fuel powered cars. The constant combustion of fossil fuels emits chemicals, emissions, and air pollutants into the atmosphere.
Terrible consequences of air pollution
Heart and respiratory issues. Alarming impacts of air pollution. Children's health issues. Even before you take a breath, air pollution is bad for your health.
Climate change Acidic precipitationEutrophicationWildlife impact Ozone layer destructionLearn more about Air pollution
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How is land subsidence related to a rise in human population?
Land subsidence happens when the increased demand for water is countered with sound agricultural practices.
Land subsidence happens when the increased demand for water causes the levels of the water table to rise.
Land subsidence happens when the increased demand for water causes the levels of the water table to lower.
Land subsidence happens when the increased demand for water results in rapid recharging of aquifers.
Answers
Land subsidence is related to human population growth because soil subsidence occurs when increased water demand causes groundwater levels to drop.
What causes subsidence?Subsidence is a phenomenon of lowering of the ground surface due to changes in the underground support. The phenomenon occurs in several places in the world due to the
extraction of wateroil and gas from the subsoil.With this information, we can conclude that Land subsidence is related to human population growth because soil subsidence occurs when increased water demand causes groundwater levels to drop.
Learn more about groundwater in brainly.com/question/10005777
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Answer:
Land subsidence happens when the increased demand for water causes the levels of the water table to lower
Explanation:
I did the test
Which of the following is true for gravitational force
Answers
Answer:
B increases with increase in mass
Explanation:
Please Answer I will rate Brainliest
Answers
Answer:
C proline tyrosine glutamic acid
Explanation:
Like most students, Megan really enjoyed doing labs in science class. One day her teacher allowed the class to design their own experiment. Her task was to see if she could blow up a balloon using chemicals. Megan knew that vinegar and baking soda would fizz and produce a gas. However, her teacher didn't give her any vinegar to use, only dilute hydrochloric acid. Megan thought she could use the acid in place of the vinegar.
Based on the reading above, which hypothesis would be supported by the experiment?
Answers
The BALLOON BLOW UP SCIENCE EXPERIMENT provided evidence to support this claim.
When baking soda, a basic, and vinegar, an acid, are combined, a chemical reaction occurs that produces carbon dioxide gas. Instead of having a predetermined volume or shape, gases expand quickly to fill their container. Because of the fast particle motion in all directions, gases expand quickly. The carbon dioxide gas starts to fill the balloon as it fills the bottle since it has nowhere else to go. The balloon fills with carbon dioxide gas and expands as a result. The size of the balloon will increase with the amount of gas produced. A material is said to be acidic if it has a bitter taste, reacts with metals and carbonates, and turns blue litmus paper red. A base is a compound that has a bitter taste, is slick to the touch, and causes red litmus paper to turn blue.
Learn more about carbon dioxide gas
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How does biology
diversity is increased
by process of Spocation?
Answers
Answer: In eukaryotic species—that is, those whose cells possess a clearly defined nucleus—two important processes occur during speciation: the splitting up of one gene pool into two or more separated gene pools (genetic separation) and the diversification of an array of observable physical characteristics (phenotypic ...
Hope this helps..... Stay safe and have a Merry Christmas!!!!!!! :D
What did Mendel observed when he
crossed a green and a yellow pea?
All the offspring came out green
All the offspring came out as a mix of green
and yellow
There was more green peas than yellow
All the offspring came out yellow
Answers
Answer:
Green was dominant over yellow. So they were all green if you are talking about the first generation. The second generation would be a mix
Explanation:
23. The toes are anterior to the ankle : true
or false?
true
false
neither
Answers
Answer:
it's true hope it helps
Represents exponential growth
Answers
Answer:
The variable b represents the growth or decay factor. If b > 1 the function represents exponential growth. If 0 < b < 1 the function represents exponential decay. When given a percentage of growth or decay, determined the growth/decay factor by adding or subtracting the percent, as a decimal, from 1.
Explination "Im different"