There are three main types of galaxies<span>: Elliptical, Spiral, and Irregular. Two of these three </span>types<span> are further divided and classified into a system that is now known the tuning fork diagram. When Hubble first created this diagram, he believed that this was an evolutionary sequence as well as a classification.</span>
Answer:
D
Explanation:
Genetic recombination can be due to crossing over (which only occurs during meiosis). Genetic recombination is basically combinations of alleles that the parents don't have and because they are different from the parents, it leads to increased genetic variation.
