Which three processes lead to variation among offspring that have the same two parents?

a) genetic recombination, fertilization, meiosis

b) crossing over, random chromosome assortment, genetic recombination

c) meiosis, crossing over, genetic recombination

d) fertilization, crossing over, random chromosome assortment

Expert Solution

d. Fertilization, crossing over, random chromosome assortment

Explanation:

The behavior of chromosomes during meiosis and fertilization is responsible for most of the variation that arises each generation during sexual reproduction.

The 3 mechanisms contribute to genetic variation:

1. Independent assortment (random chromosome assortment)

2. Crossing over (introduced during prophase I)

3. Fertilization

gladiator answered 2 years ago

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