Variation may be due to:
Correct answer: D. All A, B, C
- A. Mutation
- B. Genetic recombination during gametogenesis
- C. Gene flow
- D. All A, B, C
Explanation
The correct answer is D: All A, B, C. Each of these processes plays a role in genetic variation. Mutation introduces new genetic variants. Genetic recombination during gametogenesis results in new allele combinations, and gene flow allows genetic material to move between populations. Each process is an essential component of genetic diversity. Options A, B, and C are individually correct but do not encompass all sources of genetic variation when considered alone.
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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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