The processes that lead to most genetic variation in sexually reproducing organisms are as follows;
- cross over
- independent orientation of chromosomes in meiosis
- random fertilization
The behavior of chromosomes during fertilization and meiosis is what brings most of the variation that arises each generation during sexual reproduction.
A. craters, because it's what keeps water in certain places
You need to put the answer choices because there is a lot that makes natural selection occur. but without the answer choices i would say a fertile female and made of reproductive age.
Answer:because water is very polar
Explanation:
Answer:
Cellular respiration, the process by which organisms combine oxygen with foodstuff molecules, diverting the chemical energy in these substances into life-sustaining activities and discarding, as waste products, carbon dioxide and water.
