question_answer 78)

  Offspring formed by sexual reproduction exhibit more variation than those formed by asexual reproduction because (a) sexual reproduction is a lengthy process (b) gametes of parents have qualitatively different genetic composition (c) genetic material comes from parents of two different species (d) greater amount of DNA is involved in sexual reproduction

Answer:

                  (b) In asexual reproduction the offspring that are produced are not only identical to theparent but are also exact copies of their parent. It is because in asexual reproduction there is the involvement of a single parent. So, in this case the genetic variation is not created. While, in sexual reproduction genetic variation is created and inherited. In sexual reproduction, two parents (opposite sex) having different genetic composition participate in the reproductive process and also involve fusion of male and female gametes, which gives rise to the new individual having genetic composition of both.