Inbreeding reduces the fitness of a population. This is the result of which increased genetic effect of inbreeding?
Correct answer: D. Expression of deleterious recessive traits
- A. Rate of spontaneous mutation
- B. Levels of aggression
- C. Genetic diversity
- D. Expression of deleterious recessive traits
Explanation
d) Expression of deleterious recessive traits, This option is also correct. Inbreeding increases the likelihood of homozygosity for recessive alleles, including deleterious ones. When two closely related individuals carry the same recessive deleterious allele, there is a higher chance that their offspring will inherit two copies of that allele, leading to the expression of harmful traits or genetic disorders.
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About Evolution
Evolution describes heritable change in populations over generations through variation, natural selection and adaptation. Lamarckism explains inheritance of acquired characteristics, while Darwinism explains selection of favourable inherited variations; these historical explanations must not be confused with the modern genetic account of evolutionary change.
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