ANIMAL REPRODUCTION AND DEVELOPMENT
SEXUAL REPRODUCTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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In sexual reproduction, offspring have a combination of their parents’ traits.
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In sexual reproduction, new traits emerge.
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In sexual reproduction, the wrong number of chromosomes results in disorders.
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In sexual reproduction, offspring are identical to their parents.
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Detailed explanation-1: -Sexual reproduction results in genetic variation, or genetic differences, between parents and offspring. Offspring inherit one set of chromosomes from each parent. So, an offspring has a mixture of chromosomes (and alleles) from its two parents. Sexual reproduction also results in genetic variation among siblings.
Detailed explanation-2: -This is because during sexual reproduction, the gametes of two parents, male and female, come together and fuse. Thus, the offspring has the genetic material of both the parents. Apart from this, variations are also introduced in the offsprings.
Detailed explanation-3: -Answer : Gametes of sexually-reproducing animals have half the number of chromosomes as that of the parents. Thus, during fertilisation, when two gametes i.e. male and female gametes, fuse, the offspring produced will have the same amount of DNA or the same number of chromosomes as that of the parent.