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Alexus [3.1K]
3 years ago
14

How did artificial selection help Charles Darwin's of evolution

Biology
1 answer:
maria [59]3 years ago
5 0
Charles Darwin made use of artificial selection to help gather evidence for his proposed mechanism for how evolution occurs. Darwin was able to show that he could choose which traits were desirable for those to be passed down to the offspring by breeding 2 pigeons with the trait.
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How do transposable elements and short tandem repeats (STRs) differ? a. STRs occur within exons; transposable elements occur wit
Allisa [31]

Transposable elements and short tandem repeats are different because short tandem repeats make up only a small percentage of a given genome while transposable elements often make up larger parts of a genome. So the correct option is C.

<h3>What are transposable elements? </h3>

Transposable elements or transposons are a class of genetic elements. They can  “jump” from one location to another, in a genome.

Even though they are called “jumping genes,” they have an integrated site in a genome and are maintained there. Also, most of them are eventually inactivated and can not move any longer.

Whereas Short tandem repeats or STRs are short repeats of DNA. They are also known as microsatellites or simple sequence repeats. They have a repetitive unit of 1-6 bp and form a series of 100 nucleotide lengths.

Therefore the correct option C.

Read more about transposons, here

brainly.com/question/12294587

#SPJ4

5 0
1 year ago
Which term best describes the temperature and weather conditions of an organism’s environment? biotic factors abiotic factors na
Reptile [31]

Answer:

according to me the answer is abiotic factor

7 0
3 years ago
Una mujer lleva en uno de sus cromosomas X un gen letal recesivo (l), y en el otro alelo dominante normal (L). ¿Cuál es la propo
nlexa [21]

Question in English:

A female carries a recessive lethal gene (l) on one of her X chromosomes, and a normal dominant allele (L) on the other. What is the sex ratio to be expected in this woman's dependency if she marries a normal man?

Answer:

2/3 females

1/3 males

Explanation:

Females have two X chromosomes (XX) and males have an X and a Y chromosome (XY).

The genotype of the female is XLXl. The genotype of the male is XLY, since he is normal.

The possible genotypes are:

<u>                            XL                  Xl</u>

<u>XL</u>                     <em>XLXL             XLXl</em>

<u>Y</u>                       <em>XLY               </em><em>XlY</em>

<em />

All female offspring will be normal as they will always have one normal copy of the X chromosome from their father.

50% of the male offspring will be normal, but 50% will inherit the lethal gene from their mother.

Because the allele is lethal, that means XlY males will not be born.

That means 2/3 of the children will be females, and 1/3 will be males.

8 0
3 years ago
What are some of the challenges to treating exotic animals
NemiM [27]
For many of their illnesses scientist and doctors haven't treated them before so they don't know how to treat them or exactly if the animal can handle the treatment
4 0
3 years ago
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5. What is the function of epithelium on the bottom of our foot?|
saw5 [17]

Answer:

Simple epithelium is a single layer of cells with every cell in direct contact with the basement membrane that separates it from the underlying connective tissue. In general, it is found where absorption and filtration occur. The thinness of the epithelial barrier facilitates these processes.

3 0
3 years ago
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