People who have an extra x chromosome could have gotten it through
(a) nondisjunction.
(b) transposition.
(c) transduction.
(d) crossing over.
(e) all of the above.

In some plants, pointed leaves (p) are dominant over rounded leaves (p). a plant with a genotype of pp

If a strand of dna has 35% thymine. what is the percentage of cytosine, adenine, guanine?

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