Question

Which of the two events together restore the normal number of chromosomes in life cycle?

• A. Mitosis and Meiosis
• B. Meiosis and fertilisation
• C. Fertilisation and mitosis
• D. Only meiosis

Answer 1

The correct option is B Meiosis and fertilisation

Meiosis and fertilization restore the normal number of chromosomes in the life cycle. Meiosis produces haploid gametes with one set of 23 chromosomes. When two gametes fuse, the resulting zygote is once again diploid, with the mother and father each contributing 23 chromosomes.

So, the correct answer is option B.