Below Are Three Statements

Multiple Choice

Below are three statements. Classify them as examples of independent orientation, crossing over, or random fertilization. I: The formation of a zygote from an egg and a sperm is an unpredictable event.
II: Random combinations of paternal and maternal chromosomes end up in gametes.
III: An allele on the paternal chromosome 18 ends up on the maternal chromosome 18.

A) I: random fertilization; II: random fertilization; III: independent orientation
B) I: random fertilization; II: crossing over; III: independent orientation
C) I: independent orientation; II: random fertilization; III: crossing over
D) I: random fertilization; II: independent orientation; III: crossing over