The answer is B. Cross-pollination occurs when pollen fertilizes female egg cells on the same flower.
Each gene occupies a specific position on a chromosome. Because genes provide instructions for making proteins, and proteins determine the structure and function of each cell in the body, it follows that genes are responsible for all the characteristics you inherit. These pair up to make a total of 46 chromosomes.
It’s because unlike twins the regular siblings aren’t born on the same date or a couple minutes apart, but rather a couple years old or younger.
In a ring species gene flow occurs between neighboring populations of a species, but at the end of the ring populations don’t interbreed.
