Question

How sexual reproduction gives rise to more viable variations than asexual reproduction?

• A. Separation of homologous chromosomes (by chance only) during gamete formation
• B. Crossing over (recombination) of homologous chromosomes
• C. Fertilisation of gametes to form zygote
• D. All of the above

Answer 1

Answer: (D)

All of the above

Sexual reproduction gives rise to more viable variation than asexual reproduction. Because in sexual reproduction, genetic material from both the parents mixed (recombination of parent chromosomes) by fertilization. Hence offsprings get both the information and produce mixed characters which are not exactly the same as only mother or father. While in asexual reproduction, the single parent is involved and thus there is no recombination of chromosomes. Hence, offsprings that produced are the excat copy of their parent. Thus, the correct answer is option C.