What contributes to genetic variation during human reproduction?
Correct answer: D. All of these
- A. Random mating
- B. Non-random mating
- C. Independent assortment
- D. All of these
Explanation
The correct option is D. Non-random mating can also be outbreeding, wherein there is an increased probability that individuals with a particular genotype will mate with individuals of another particular genotype. Random mating increases the chances of genetic variation. Independent assortment during meiosis is the random assortment of chromosomes and so new combinations are made. All three options cause genetic variation hence the answer is D, all of them.
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About Inheritance
Mendel's laws explain segregation, independent assortment and the prediction of genetic ratios using alleles, genotypes and phenotypes. The chapter also covers linked genes, recombination and crossing over during meiosis, then applies pedigree reasoning to X-linked recessive traits, which show different inheritance patterns in males and females.
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