What is a major source of variation in offspring?
Answer and explanation
Correct answer: Recombination of genes in sexual reproduction
Variation means differences in characteristics among individuals of the same species. During sexual reproduction, one set of genetic material comes from each parent, and meiosis and fertilisation produce new combinations of alleles. These combinations can make offspring different from both parents and from one another. Therefore, option A identifies a major source of variation. Food color, injury, and aging do not by themselves create inherited genetic combinations.
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What is the correct answer to this question?
Recombination of genes in sexual reproduction
Why is this the correct answer?
Variation means differences in characteristics among individuals of the same species. During sexual reproduction, one set of genetic material comes from each parent, and meiosis and fertilisation produce new combinations of alleles. These combinations can make offspring different from both parents and from one another. Therefore, option A identifies a major source of variation. Food color, injury, and aging do not by themselves create inherited genetic combinations.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: World of Living. Topic: Heredity and Evolution.
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