Acquired characteristics such as a blacksmith's strong arms are not passed to his children because they
Correct answer: B. do not alter the genes in the gametes
- A. are always harmful
- B. do not alter the genes in the gametes
- C. are dominant traits
- D. affect only the nervous system
Explanation
Only changes in the DNA of eggs or sperm can be inherited, and exercise reshapes muscle without touching the germ line. This separation of soma from germ line is the fundamental objection to Lamarckism.
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About Concept of Evolution
Evolution is the heritable change in populations over generations, driven by mutation, recombination, natural selection, genetic drift and reproductive isolation. Questions examine variation, adaptation, survival and reproduction, speciation, fossil and anatomical evidence, and the difference between individual acclimatization and evolutionary change in a population.
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