Meiosis is referred to as reduction division as it divides the chromosome number in half. Crossing over or recombination is the main reason of shuffled genes and increased genetic variation in gametes in meiotic cell division as the homologous pairs are paired up during prophase.
<h3>What is crossing over?</h3>
Crossing over is referred to as the exchange of genes of DNA between paired homologous chromosomes. It actually occurs during the development of egg and sperm cells i.e., during meiosis.
It is an enzyme-mediated step, in which the exchange of genetic material takes place between non-sister chromatids of homologous chromosomes.
It actually occurs at the pachytene stage of prophase I of meiosis cell division.
Thus, it can be concluded that the crossing over is the main reason of shuffled genes and increased genetic variation.
For more details regarding crossing over, visit:
brainly.com/question/19671756
#SPJ1
Hi!
The answer should be the first options A.
Explanation: <em>Loam is a type of soil that has significant amounts of sand, silt, and clay. Hope this helps! Thank you for posting your question at here on Brainly. Have a great day! -Charlie</em>
Analogous structures are structures with different evolutionary ancestries but they have the same function. Examples include; wings of birds, insects and bats. On the other hand homologous structures have similar ancestries and common traits but may not have the same function in an organism. Well; in the above question Human apes have five fingers they can use to grasp objects, which i think these are homologous structures.
Genetic variation allows for differences between individuals due to differences in the inherited DNA.
<h3>What is genetic variation?</h3>
Genetic variation is defined as difference in DNA within individuals or populations.
Genetic variation is the presence of variation in gene sequences between individual organisms of a species.
Skin color, hair color, blood type, dimples all are the examples of genetic variations that seems in a human population.
Therefore,genetic variation allows for differences between individuals due to differences in the inherited DNA.
Learm more about genetic variation here:
brainly.com/question/848479
#SPJ1
<span>
D. Recycling paper reduces both air and water pollution.
~Brainliest ?(: </span>