Because all rocks types are different froM one another.
I believe the answer is a. crossing over
Answer:
1. genotype of female: Bb
a. genotype of male: bb
b. white is dominant
c. female phenotype: white
male phenotype: black
I'm working on the assignment rn. But here are some clues to help you.
To reduce the likelihood of human error, to gather more evidence, and to make his numbers more exact.