In a cross between two heterozygous individuals (eg. rr x rr), the expected phenotypic ratio of the offspring would be

Which of the following explains why a tree is often used as a model to represent the principle of common descent

This is a scaffolding of protein fibers that us sell keep it shape in a cell division and cell movement

Which of the following is caused by reproductive isolation within a species? a. a decrease in gene flow b. an increase in genetic flow c. a decrease in genetic drift d. an increase in gene flow