______ is a source of genetic variation that involves the swapping of sections of chromosomes during meiosis

Answers

Answer 1

Answer:

Crossing over.

Explanation:

I do believe that is the correct answer.


Related Questions


In cats, long tails are dominant over short tails. Cross one heterozygous
long-tailed cat with a short-tailed cat.
What is the chance there will be a short-tailed cat born?
75
25
50
О

Answers

Answer:

I think the chance will be 50 for short tailed cat

What is the difference between natural selection and selective breeding? Then, give examples of natural selection and selective breeding?

Answers

Natural Selection is when traits are "naturally" selected for, because "survival of the fitttest."  Example would be a species becoming bigger over time, because the smaller animals of that species were more likely to be eaten by predators.  Natural selection is when the "best" trats are passed down due to chance

Selective breeding is if an outside forece (like a dog breeder) "chooses" a triat to be passed down.  Example, instead of breeding a brown dog with a white dog, the breeder breeds two black dogs together in orer for the litter to all have black fur

ill give brainly please answer asap

Answers

Answer : A


The answer is this because 1 cm = 10 mm which if you do the math 7x10 it will equal to 70mm. However, we still need to multiply it by 2 since it requires it in the question. Then, it will equal to 140mm! Also, good luck!

Which of the following occurs during
Prophase?

Answer: Nuclear envelope breaks down!

Answers

Answer:

During prophase, chromosomes condense and exit the nuclear envelope to align during metaphase. Anaphase follows metaphase, and is characterized by the separation of sister chromatids. Telophase is the final mitotic stage, during which the cell prepares for cytokinesis.

Explanation:

You're not supposed to give out the answer but thanks anyway

huh ? there’s no pic and you gave the answer

Larvae of the Diamondback moth feed on cauliflower paleo Aunt Farmers commonly used pesticides to repel them all from the cauliflower plants the larvae of the Diamondback moth arnab resistant various types of pesticides which statement best describes how the larvae became resistant?

Answers

Answer:

Mutation.

Explanation:

Mutation is the factor that is responsible for the acquiring resistance of various pests against pesticides because in mutation the genetic makeup of the organism changes which has no effect of the chemicals applied on them. Repeated use of the same type of pesticides to control a specific pest can cause changes in the genetic makeup of a pest that leads to another form of pest which causes pesticide resistance in the new type of pest so we can say that mutation is the main cause of resistance in pests.

The principles of probability can be used to

Answers

Answer:

predict the outcomes of genetic crosses.

Explanation:

Read this Pulmonology Consult excerpt:On physical exam, the patient is alert. He takes occasional pauses when he says long sentences, but otherwise, he is not in any distress. He has an occasional cough during his exam. His skin is pink and dry, and his lips are moist. His heartbeat is regular in rate and rhythm, without a murmur. On lung examination, he has whispered pectoriloquy on the right side with decreased breath sounds. He does not have any retractions or nasal flaring noted. His liver and spleen are not large.According to the excerpt, what was found upon lung examination on the right side?A. "Whispered pectoriloquy" - a chest that protrudes like the keel of a ship when the patient whispersB. "Whispered pectoriloquy" - "speaking from the chest"; used as a means of finding masses in the lung. The whispered word is audible in areas where fluid or a mass is presentC. "Retractions" - reverberations in the chest when it is struckD. "Retractions" - a dull sound in the chest when it is struckE. "Whispered pectoriloquy" - a chest that is hollowed out when the patient whispers

Answers

Answer:

B. "Whispered pectoriloquy" - "speaking from the chest"; used as a means of finding masses in the lung. The whispered word is audible in areas where fluid or a mass is present

Explanation:

Auscultation in medicine, is the action of listening to sounds from the heart, lungs, or other organs, usually using a stethoscope, in order to perform medical diagnosis.

Auscultation is performed for the purposes of examining the circulatory and respiratory systems, as well as the alimentary canal. The procedure is best performed in a quiet examination room. A stethoscope is used to magnify internal sounds. Small changes in breath sounds are carefully observed in order to make a diagnosis.

Whispered pectoriloquy is used to detect vocal resonance. It is  used as a means of finding masses (consolidations e.g. pus) in the lung and is performed by having the patient quietly whisper a word. If fluid or a mass is present, words that are whispered may be heard clearly.

In bunnies long ears are dominant over short ears. If two heterozygous bunnies are crossed, what is the probability their offspring will have the long ear phenotype? 1. 25% 2. 50% 3. 75% 4. 100%

Answers

Answer: 75%

Explanation:

See my picture for my work. Use a punnett square.

Answer: 75%

Explanation:

Heterozygous means that one allele would be dominant, and the other would be recessive. I will use B for the dominant allele, and b for the recessive allele.

Next, create a Punnett square (look at the pic).

To make the Punnett square, draw a 2 × 2 table. Put Bb on the top (one over each column) and Bb on the left side (one next to each row). Cross multiply. Remember to always put the dominant allele (in this case, B) in front of the recessive allele (in this case, b). The dominant allele will always be exhibited in the organism. So, the answer is 75%, since 3/4 of the different combinations of alleles is long ears.

Certain viruses have a unique reproductive strategy: they use RNA to create DNA by using
an enzyme called reverse transcriptase. HIV (human immunodeficiency virus) belongs to this class of viruses. What is this type of virus called?
Retrovirus
Reverse Virus
Lyric Virus
Lysogenic Virus

Answers

Answer:

HIV belongs to Retrovirus.

A container holds an element and a compound that are not chemically combined. Is this an element, a mixture or a compound?

Answers

Answer:

Mixture.

Explanation:

Mixture can be defined as a combination of two or more substances which are present in varied proportion and can be visibly seen by with our naked eyes.

In Science, there are two (2) main types of mixture and these are;

I. A homogeneous mixture: it can be defined as any liquid, solid or gaseous mixture which has an identical or uniform composition and properties throughout any given sample of the mixture. In Chemistry, all solutions are considered to be a homogeneous mixture. For example, aqueous hydrogen chloride is a homogeneous mixture of water and hydrogen chloride.

This ultimately implies that, in a homogeneous mixture, the different parts are uniformly (evenly) distributed.

II. A heterogenous mixture: it can be defined as any mixture which has a different or non-uniform composition and properties throughout any given sample of the mixture. This ultimately implies that, the constituents of a heterogenous mixture always remain separate in the sample and as such comprises of two or more phases.

For example, a mixture of sand and coffee is simply a heterogenous mixture and can easily be separated into their various components.

In this scenario, a container holds an element and a compound that are not chemically combined. Thus, this is a mixture.

which phrase describes a plant spore but not a plant seed

Answers

Answer:

the phase that describes a plant spore but not the plant seed is called meiosis

Answer:

Made of a single cell

Which two phrases best describe vascular tissue in plants?
O A. Contain cells that connect to form pipes
B. Cover the outside of plants
O C. Transport water and food
O D. Contain root hair cells and guard cells

Answers

Answer:

These 2 might be the best answers:

A. Contain cells that connect to form pipes

C. Transport water and food

I agree he is correct for the question

Why are piglets given solid feed six days after birth rather than right after birth?

Answers

Answer:

milk

Explanation:

It is usually because they need milk for the protein and vitamins and other important stuff that they need to survive

What are the effects of a set of alleles on an organisms health or appearance?​

Answers

what are the facts of a set of allies on an organism health or appearance

Which is the best example of a response to an external stimulus?

A. drinking water after a long run
B. avoiding the sun by looking for food at night
C. a hungry bear hunting for food
D. falling asleep in the treetops of a forest

will mark brainiest

Answers

Answer:

B

Explanation:

I'm not 100% sure.... but that one is the only choice I would pick

Answer:

A

Explanation:

7.
If an igneous rock cuts across a sedimentary rock, we know that the igneous
rock is
A. older than the sedimentary rock
B. younger than the sedimentary rock
C. the same age as the sedimentary rock
D. a minimum of 1.2 million years old
Please help me quick

Answers

Answer:

B. younger than the sedimentary rock.

The answer is B. younger than the sedimentary rock

plzzzzzz i need help it’s due soon!

what do both the liver and the pancreas do for the body besides for aid in the digestive process

Answers

Answer:

The liver digests food by producing bile to break down fats, removing toxins and breaking down and storing some vitamins and minerals.

ill give brainly pls help

Answers

I think it’s A.) 200, good luck!

Body temperature, pH and blood pressure are ways that the body maintains what?

Answers

Answer:

Homeostasis refers to the body's ability to maintain a stable internal environment (regulating hormones, body temp., water balance

Explanation:

12 POINTS!!

explain how the nervous system is important to cellular respiration

Answers

Answer:

It provides the cells with oxygen

Domain Eukarya divides into four kingdoms _____________, ______________, ______________, and _________________

Answers

The four eukaryotic kingdoms are animalia, plantae, fungi, and protista.

1) You are studying the uptake of a certain molecule into cells that produce no ATP. You discovered

that it in fact does become transported into the cell. To further your research, your colleague

decides to do the same experiment but supplies the cell with ATP. He discovers that the cell

transports more of the molecule intracellularly.

a. Describe the difference in transport between your experiment and his. Explain. (10pts)

b. What characteristics must this molecule have in order to use both types of transport?

(10pts)

Answers

Answer:

Your cell use passive transport whereas your colleague cell use active transport.

Explanation:

There is a great difference in the type of transport between your experiment and his because you provide no ATP to the cell for transport means you use passive transport in which the cell moves molecules without the use of energy while on the other hand, your colleague provides ATP to the cell means the cell transports molecules with the use of energy so the cell use active transport. The characteristics of molecules have the presence of both type of cells which do both type of transport.

Which of the food below are fortified with Vitamin D which helps our body with
calcium absorption:

Dairy products like yogurt and Cheese

Whole grain breads

Healthy canned fruits and vegetables with no additives or sugars

Low fat meats like chicken and fish

Answers

Answer:d

Explanation:

Answer:

Chicken and fish - is the answer

Explanation:

What is a limiting factor and how can limiting factors limit the size of a
population?
A. A resource that is so scarce (in restricted quantity) that it limits the size of a
population is called a limiting factor. Any single resource can be a limiting factor
to a population size. For example, the amount of water available can affect the
number of plants that can grow in an area.
B. A resource that is so plentiful that it limits the size of a population is called a
limiting factor. Any single resource can be a limiting factor to a population size.
For example, the amount of water available can affect the number of plants that
can grow in an area.

Answers

Answer:

A. A resource that is so scarce (in restricted quantity) that it limits the size of a population is called a limiting factor. Any single resource can be a limiting factor to a population size. For example, the amount of water available can affect the number of plants that can grow in an area.

4. Why is systems thinking important?

Answers

Explanation:

When you use system thinking in management and operations, it helps you to make the right business decisions. Ultimately, the goal of thinking in systems is to help you avoid time, money and other resources.

3.When Watson and Crick built and proposed the DNA structure, they determined three important features.
What were the three features they proposed? Select all that apply.
Multiple select question.
A) Two outside strands consist of alternating deoxyribose and phosphate.

B) Two outside strands consist of alternating ribose and phosphate.

C) Guanine and cytosine bases pair to each other by two hydrogen bonds.

D) Guanine and cytosine bases pair to each other by three hydrogen bonds.

E) Guanine and adenine bases pair to each other by three hydrogen bonds.

F) Cytosine and thymine bases pair to each other by two hydrogen bonds.

G) Adenine and thymine bases pair to each other by three hydrogen bonds.

H) Adenine and thymine bases pair to each other by two hydrogen bonds.

Answers

A,D,H

The backbone of DNA is deoxyribose and phosphate while RNA is composed of ribose and phosphate. C and G (curvy letters pair together) pair together with 3 hydrogen bonds while A and T pair together with 2 hydrogen bonds.

According to Watson and Crick, DNA replication used each strand's nucleotides as a template for new strands. Thus,option A, D, H is correct.

What is the Watson and Crick model about DNA?

Watson-Crick DNA structure. The molecule of DNA is a double-stranded, helical structure. It consists of two sugar-phosphate backbones on the outside and nitrogenous base pairs on the inside, bound together by hydrogen bonds.

DNA behaves like a double helix made up of two protracted, intertwined helical strands.

In their model, the bases along one DNA strand matched the bases along the other DNA strand. Each DNA strand comprised discrete units known as bases.

Therefore, Watson and Crick built and proposed the DNA structure, which determined important features of DNA.

Learn more about Watson and Crick here:

https://brainly.com/question/7849006

#SPJ2

Why is meiosis considered sexual reproduction?

Answers

Answer:

Meiosis is a type of cell division that reduces the number of chromosomes in the parent cell by half and produces four gamete cells. This process is required to produce egg and sperm cells for sexual reproduction.

Explanation:

God said so

Which characteristic of an element determines its placement in the periodic table? O A. number of protons O B. size O C. mass O D. number of neutrons​

Answers

Answer:

it gonna be A. Number of protons  

Explanation

Elements are placed in order on the periodic table based on their atomic number, how many protons they have.

The steeper the river is, the slower the water moves.

Answers

Answer:

That Sounds about right...

Explanation:

God said so

PLEASE HELP ME SOLVE THIS I BEG, BE KIND AND THE UNIVERSE WILL REWARD YOU, THE FILE IS BELLOW

Answers

I can’t see it.........

Answer:

Ee = Heterozygous

part 2:

TT = is able to roll tongue

Tt = is able to roll tongue

tt = is NOT able to roll tongue

HH = has mid finger hair

Hh = Has mid finger hair

hh = does not have mid finger hair

CC = has a cleft chin

Cc = has a cleft chin

cc = does not have a cleft chin

Part 3:

Widows peak = TT Tt

No widows peak = tt

No hitchhiker thumb = tt

Hitchhiker thumb = TT Tt

Explanation:

I cant answer the punnet square stuff, but just put the peas genotypes on the top and then the left of the punnet squares (there should only be two genotypes to put)

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what is a triangle with a 90 degree angle What is the area of the triangle at the right? Use details from paragraphs 15-18 to write two or three sentences describing which days were special to the slaves and why. Cite evidence from the text to support your explanation. Air Tampa has just been incorporated, and its board of directors is grappling with the question of optimal capital structure. The company plans to offer commuter air services between Tampa and smaller surrounding cities. Air Tampa believes it would have the same business risk as Jaxair, which is an airline that has been around for a few years and that has had zero growth. Jaxair's market-determined beta is 1.8, and it has a current market value debt ratio (total debt to total assets) of 45% and a federal-plus-state tax rate of 25%. Air Tampa expects to have investment tax credits when it begins business, which reduces its federal-plus-state tax rate to 15%. Air Tampa's owners expect that the total book and market value of the firm's stock, if it uses zero debt, would be $14 million. Air Tampa's CFO believes that the MM and Hamada formulas for the value of a levered firm and the levered firm's cost of capital should be used because zero growth is expected. Required:a. Estimate the beta of an unlevered firm in the commuter airline business based on Jaxair's market-determined beta. b. Now assume that rd= rRF= 10% and that the market risk premium RPM for an unlevered commuter airline. 5%. Find the required rate of return on equity c. Air Tampa is considering three capital structures: (1) $2 million debt, (2) $4 million debt, and (3) $6 million debt. Estimate Air Tampa's rs for these debt levels. If 5 hamburgers cost $10, what is the cost for 3 hamburgers? Two dogs are having a game of tug of war with their toy. What has to happen so that one of them can win? having two of the same genes for the trait (sometimes called purebred). help with this who answer the correct get brainleist all three of the Questions 3.5.6 Introduce Yourself, Part 2please hellllpp it keeps saying the code is wrong Everyone caugh speeding on the interstate highway was given a ticket even the governor.O Individual Rights and FreedomsO Separation of PowersO Popular SovereigntyRule of Law Fill in the missing words or phrases. 1. regalo (este) 2. gafas (este) 3. sombrero (este) 4. caja (este) 5. vestidos (ese) 6. ropa (ese) 7. mercado (ese) 8. clientes (aquel) 9. medias (ese) 10. corbata (ese) pls help!!! will give brainly!!!how to say in spaish? In the summer, it is sunny and dry. 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(B) According to the opinion article "All the Reasons Why Zoos Should Be Banned," published by Vice in 2015, polar bears in captivity have up to 18,000 times less space in zoos than they do in the wild. Animals cannot live full, healthy lives in captivity. Seventy-five percent of elephants kept in zoos are overweight, and 40 percent of lion cubs pass away before their full life span potential. (C) The British Broadcasting Company (BBC) has reported that around 3,000 to 5,000 animals are killed each year in zoos in Europe. Many more animals show signs of zoochosis, a psychological disorder observed in zoo animals that leads to pacing, bar biting and obsessive behavior. (D) Rather than scrambling for resources that will never prove adequate to the animals in their care, zoos should instead make an effort to reintroduce the animals into natural habitats where they can thrive on their own. Amber ran a 25 kilometer road race in 3 hours. She ran at the same speed and covered the same distance each hour. Draw a visual model to find the distance Amber ran each hour. Between which two whole numbers does the she ran each our lie please help me with question 1 and 2. Which of the following statements best describes the replication of DNA?a. The double helix unzips the hydrogen bonds between bases and like bases pair up (G with G, C with C, etc.)b. The double helix unzips at the phosphate bonds and new nucleotides pair with the appropriate sugars.c. The double helix unzips the hydrogen bonds between bases and new DNA nucleotides pair with the complementary bases in the old strands.d. The double helix unzips and RNA forms base pairs with the complimentary strand of DNA.