Variation may be due to:
Correct answer: D. All A, B, C
- A. Mutation
- B. Genetic recombinant during gametogenesis
- C. Gene flow
- D. All A, B, C
Explanation
All of the options (mutation, genetic recombinant during gametogenesis, genetic drift, and gene flow) contribute to genetic variation in populations. Mutation introduces new genetic variants, genetic recombinant during gametogenesis creates novel combinations of existing variants, genetic drift causes random fluctuations in allele frequencies, and gene flow transfers genetic variants between populations.
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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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