Natural selection act directly upon <u>Alleles</u>
Explanation:
Genes, such as that of fur color, have many variants called alleles. Natural selection act on the alleles and chooses the best fit for an environment and eliminates the disadvantageous ones from the population over generations. Mutations are a rare occurrence that increases the number of allelic variants of a genes on which natural selection can act upon.
Answer:
no
Explanation:
matter can neither be created nor destroyed so all matter is reused
If your cells got filled up with water, the cells would expand and then explode. You would eventually die.
No because they help to come up with tests that a person could run and then when they don't work just change the hypothesize to something that fits the tests or change the tests.
