Question

Which one is correct about crossing over / genetic recombination?

I. It occurs in tetrad stage. It occurs in pachytene of prophase I of meiosis I

II. It occurs between non-sister chromatids of homologous chromosomes

III. It is the exchange of genetic material between the homologous chromosomes

IV. It is recombinase enzyme mediated process

V. Recombination nodule of synaptonemal complex between the homologous chromosomes is the site of crossing over.

VI. It causes genetic variation which is important for evolution.

VII. It is also the reciprocal transfer of genes between the non homologous chromosomes

• A. All
• B. All except VII
• C. II, IV and VII
• D. I, III and VII

Answer 1

Answer: (B)

All except VII