Which of the following best describes what happens during a cross-over event?

Answers

Answer 1

Answer:

Chromatids of homologous chromosomes exchange corresponding segments.

Explanation:

The crossover of chromosomes is the exchange of genetic material between homologous chromosomes. Homologous chromosomes are present in the meiosis I, but not in meiosis the II. After pairing up of in the prophase I, homologous chromosomes are able to exchange some corresponding segments and a cross-over occurs. Thanks to the cross-over event, each chromosome will have a new combination of genes. Without this, parents will produce gametes with only two different gene combinations.

Answer 2

Answer:

Chromatids of homologous chromosomes exchange corresponding segments.

Related Questions

These days people use plastic to pay for everything. " What does the synecdoche mean in this question?

Answers

A synecdoche is a figure of speech by which a part is used to represent the whole and in this sentence the “plastic” is a part of the credit card but is used to represent the credit card in its entirety.

A figure of Speach that represents something as “whole”

Which reaction has the lowest activation energy?

combustion of oil

rotting of bananas

explosion of fireworks

synthesis of water

Answers

High amounts of ethylene cause the yellow pigments in bananas to decay into those characteristic brown spots in a process called enzymatic browning. ... A damaged or bruised banana will produce an even higher amount of ethylene, ripening (and browning) faster than if undamaged.

H A L P . M E .

What would happen if we kept adding more CO2 into the air?
Would it increase or decrease?
Is this what we need?

Answers

Answer:

it would increase

Explanation:

yep that is what you need

Rising carbon dioxide concentrations are already causing the planet to heat up. ... Greenhouse warming doesn't happen right away because the ocean soaks up heat. This means that Earth's temperature will increase at least another 0.6 degrees Celsius (1 degree Fahrenheit) because of carbon dioxide already in the atmosphere

List 3 negative impacts does plastic pollution have on the ocean?

Answers

Entanglement
Ingestion
And suffocation

Answer:

Negative physical impact on marine life, chemical impact on the water, and transport of native species.

Explanation:

Negative physical impact on marine life:

Plastic can be dangerous to creatures living in the ocean. Marine animals can fatally swallow plastic, become entangled in it, and even become physically impaired for the rest of their life.

Chemical impact on the water:

Plastics carry chemicals such as PCBs and DDT that can invade the water and cause harm to marine ecosystems.

Transport of native species:

Plastic can carry organisms from one part of the ocean to a relatively remote area. By introducing new organisms to an ecosystem, the flow can be disrupted and result in major consequences.

HELP PLEASE!! '
Which resource is sometimes unpredictable in terms of energy production?

coal
wood
gasoline
natural gas

Answers

I’m pretty sure it’s natural gas, I’m not sure though pls correct me if I’m wrong

The Natural resource that is considered unpredictable in terms of energy production is natural gas.

Option D is correct

What is Natural Gas?

Generally, Natural gas is simply a gas that is derived from the systematic combination or mixture of other gases which are rich in hydrocarbon particles.

gases like

methanenitrogencarbon dioxide

These are the gases considered in the Natural gases mixture.

In conclusion, because of the variation of its content Natural Gas are unpredictable in terms of energy production.

Answers

Answer:

Explanation:

Genetically engineered foods are inherently unstable. Each genetic insertion creates the added possibility that formerly nontoxic elements in the food could become toxic.

Genetic engineering can also alter the nutritional value of food.

Another hidden risk of GE foods is that they could make disease-causing bacteria resistant to current antibiotics, resulting in a significant increase in the spread of infections and diseases in the human population.

Answer:

Many people believe that GMOs are bad for their health – even poisonous – and that they damage the environment.

Explanation:

Moreover, most GM crops are either bred to withstand chemical pesticides or developed to generate insecticides themselves. When herbicides are applied on resistant crops, the weeds acquire resistance over time, necessitating the use of even more chemicals. Crops genetically modified to generate pesticides, on the other hand, create poisons that are toxic not just to pests but also to other insects such as butterflies, moths, and insect pollinators.

carbon and oxygen atoms can combine to form the gas called carbon dioxide.

Answers

Answer:is true

Explanation:

Carbon dioxide is made up of one carbon atom and two oxygen atoms.

yes this is true because carbon dioxide is made up of both oxygen and carbon atoms

For each of the genotype (AA, Aa, aa) determine what the phenotype would be?

Pls help test tmrw….

Answers

Capital leters are dominant and non capital are ressesscivr

Answer: He is correct he was so mine too yep

Is an asteroid balanced or unbalanced

Answers

Answer:

should be balanced

Explanation:

When the forces acting on an object have equal strength and act in opposite directions, they are balanced. These forces cancel out one another, and the motion of the object they are acting on remains unchanged. When the forces acting on an object are unbalanced, they do not cancel out one another.

How does the cycling of matter and energy in the greenhouse exemplify the Law of Conservation?

Answers

Explanation:

Matter can change form through physical and chemical changes, but through any of these changes matter is conserved. The same amount of matter exists before and after the change—none is created or destroyed. This concept is called the Law of Conservation of Mass.

For example, the carbon atom in coal becomes carbon dioxide when it is burned. The carbon atom changes from a solid structure to a gas but its mass does not change. Similarly, the law of conservation of energy states that the amount of energy is neither created nor destroyed.

Describe the smell, color, and temperature of the contaminated water

Answers

I describe the smell as rotten. Also I describe the color as a discussing brownish, greenish,orange and the temperature to me is unknown cause I have never felt this kind of water

45 POINTS FOR A CORRECT ANSWER!!!! No links though, those are super sus and I don't like those. If you do something sus I will report you. :) But please help me! I'm super confused and a thorough explanation would really help! Thanks to anyone who answers in advance!

A specific type of bacteria reproduces through binary fission every two hours. If there are seven bacteria to begin with, how many bacteria will there be after four hours?

Answers

Answer:

Explanation:

This is because every 2 hr 4 bacteria "are made" so 7 bacteria 2 hrs later

7x4=28

Describe the inheritance pattern of blood types. Describe the inheritance type of different hair colors. Why are each unique?

Answers

Pairs of unit fractures

Beavers, large members of the rodent family in North America, are often referred to as “ecosystem/keystone engineers” by wildlife managers. Ecosystem engineers are described as animals that create, alter, or destroy a habitat. Beavers contribute to river ecosystems by bringing down old and dead trees along riverbanks. They use these trees to make their dams. Although these dams are primarily used for protection and food storage, scientists report that these dams change the surrounding environment in different ways.

Given this information, in three to five sentences, describe a potential benefit that beavers contribute to the ecosystem as keystone engineers and describe a plausible impact that the removal of beavers could have on the surrounding ecosystem.

Answers

Answer:The potential benefit that beavers contribute to the ecosystem include sources of food and habitat for some animals.This consists of all the organisms and the physical environment with which they interact.The removal of the beavers will allow for more oxygen to be present within the ecosystem as a result of increased plant population.

Explanation:

Answer:

2-6=4 thx

Explanation:

it is thx

How does a raccoon use their adaptations to survive in the wild (paragraph, 5 sentences) please Ty!

Answers

Raccoons are remarkably adaptable creatures, equipped with a variety of physical and behavioral traits, like night vision. These traits enable them to thrive in a wide range of environments. With their dexterous paws and sharp senses, raccoons efficiently locate and capture food, be it in a bustling city or an isolated forest. Additionally, their intelligence and problem-solving skills allow them to adapt to new situations and overcome obstacles with ease. These key adaptations not only aid in their survival, but also contribute to the raccoon's reputation as a resourceful and resilient animal

Raccoons have a highly developed sense of touch. Their front paws are especially sensitive and contain thumbs, which enable the raccoon to pry open food and climb easily. Raccoons have well-developed senses of hearing and vision.

What forms when rocks break down?

Answers

Answer:Sand

Explanation:

Answer:

Explanation:

Sedimentary rock; such as mud, sand, or gravel.

What is true about the structure or function of the plasma membrane?

A: The bilayer structure forms a solid boundary that separates the cell from its environment.

B: Large molecules often cross the plasma membrane while inside vesicles.

C: Hydrophobic molecules keep the cell from getting too much water.

D: It is made entirely of integral proteins.

Answers

Answer:

B: Large molecules often cross the plasma membrane while inside vesicles.

Why is humus an effective fertilizer? (Select all that apply.)
It is abundant in inorganic nutrients.
It is dense and does not contain organic matter.
It is rich in organic matter.
It doesn’t need microorganisms to decompose matter.

Answers

I think it is abundant In inorganic nutrients

Hii :)

The answer is: They are rich in organic matter.

Why are they rich in organic matter?

This is because humus is made out of dead plants, fruits, and sometimes even animal waste. Which is all good for growing plants.

This is the only answer because the rest are wrong.

This is a 1-1 answer, meaning this is the only one that is correct.

Hope this helps~!!

~NatLikesAnime~

(Brainliest would help~)

#LearningWithBrainly

describe how root hairs absorb nitrate ions from soils with low nitrate concentrations?

Answers

They cannot be absorbed by diffusion , because the minerals are in very low concentration. Instead, active transport is used. The root hair cells have carrier proteins in their cell membranes. These pick up the mineral ions and move them across the membrane into the cell against the concentration gradient .

active transport is used. The root hair cells have carrier proteins in their cell membranes.

I beg of you, I will mark brainliest.

Look at the picture, and place where the pictures go in order on the cycle of nitrogen. If you help, I really appreciate it, like you don't know how much :)

Answers

Answer:

Explanation:

i think it will be helpfull

Answer:

Explanation:

i am not sure but i think first the last picture of roots then 1st picture of leaves and then goat like animal then 4th picture then mushroom and then 5th picture and if this is correct mark me as brainlist

What is an example of physiological adaptation?

(Give me a thanks and I will make you brainiest)

Answers

Answer:

An example of physiological adaptation is the development of a thicker fur coat in animals living in colder climates. This adaptation helps to insulate the animal and keep its body temperature regulated. Other examples of physiological adaptation include the ability of some animals to hibernate in winter, changes in the shape of feet and claws to allow better climbing, and changes in the shape of beaks to allow better feeding in different environments.

Make Me As a Brainelist If You Like

- sweating to cool body
- formation of calluses in response to repeated contact or pressure

Earth is one million times smaller than the ________.

Answers

Earth is one million times smaller than the sun

Explanation: one million earths fit in the sun :)

The sun. The sun is about a million times larger than earth.

Cell walls can be found in several different types of cells. Which of the following best describes the function of the cell wall?
A. Controls what passes in and out of plant cells.
B. Controls what passes in and out of animal cells.
C. Provides support and helps maintain the shape of plant cells.
D. Provides support and helps maintain the shape of animal cells.

Answers

a i think but plant cells

i thibk it is a but its definitely plant cells

C.

The cell wall helps provide support to the cell. The plasma membrane is what controls the flow of ions and other particles into the cell. Cell walls are also only found in plant cells.

In which of these ways might an ectotherm respond to changes in environmental temperature?

fight or flight
move elsewhere
shiver
sweat or pant

Answers

Answer: move elsewhere :)

Explanation:

They must move elsewhere:))

give an example of competition. explain your answer.

Answers

Answer:

Me and my friend wanted a prize but only one of us could win it. So we competed in a race.

Explanation: when you want something and the other one do to you have might have a competition to get it.

My example of competition: when you are in competition you are going against an opponent and trying to defeat them in a skill that either of you have. Whoever wins would be priced a metal, candy, etc. Being in a competition is very nerve racking so it takes a lot of time and pressure for both opponents.

Explain how the lungs and circulatory system work together?

The lungs help with pumping of blood throughout the body.

The lungs take in oxygen into the body and the blood distributes oxygen to cells throughout the body.

The lungs take in carbon dioxide and blood distributes it to cells in the body.

Waste product from the blood is expelled out of the body through the lungs.

Answers

the lungs take in oxygen into the body and the blood distribute oxygen to cells throughout the body.

help i need an answer ill give brainleist

Answers

Answer:

Explanation:

the water erosion breaks down the rocks

the answer to your question is A

How is a molecule of hydrogen formed from two hydrogen atoms?
(You may use a diagram as part of your answer)

Answers

Question:

How is a molecule of hydrogen formed from two hydrogen atoms?

Answer:

A molecule of hydrogen is formed by two

hydrogen atoms, that is a fact.

How does it work? When two atoms,

known as "diatomic" pair with another in

a bond known non-polar covalent bonds.

Where they equally share electrons. A

Hydrogen atoms needs 1 more electrons

to fill its first shell fully and have full

valence shell. So if two H's share their

electrons, they'll both have a full V-shell!

That's the basic of both the H-H bond

and all the other diatomic bonds as well.

Explanation:

#Carry on learning

#StuddyHard

I have scorpions in my home. What is the best way to 1: not get stung while awake and asleep. 2:make them leave and 3: keep them out????!!!! I live upstairs but l have seen 7+ i was stung by one and iv seen like 4 babies and my dad found more!!! Plz help me with my questions. Brainlyest if all are answered.

Answers

Either call someone or use cups to catch them and slip a piece of paper underneath them and release them outside (obviously I’m trained to do this so if you don’t know what type of a scorpion this is I would not suggest touching it as it could lead you to the hospital in a matter of minutes)

i would try calling someone to help get them out and honestly maybe try to find a friend or relatives house to stay at until you know they’re gone for sure so that you don’t have to worry about getting stung

Part 2

You decide to conduct an investigation into how different materials affect the rate at which ice melts in a warm room. For your experiment, you will use a tin cup, a paper cup, and a polystyrene foam cup to hold the ice.

2. If you put the same amount of ice at the same temperature in each container, which material do you think will allow the ice to melt the fastest?

A.
tin

B.
paper

C.
polystyrene foam

Answers

Is c because of you the falcons are going orowoetot

Hopes this help answer: is A

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