Question

How many recombinants can be formed by 23 pairs of chromosomes?

• A. 84 million
• B. 76 million
• C. 66 million
• D. 56 million

Answer 1

The correct option is A 84 million

Human is a diploid organism which means that chromosomes are present in pairs. These homologous pairs are aligned on metaphase plate and are separated to opposite poles during anaphase. Total possible chromosomal combinations by an organism are 2${}^n$ where “n” is the number of pairs. The human with 23 pairs of chromosomes can make total 2${}^{23}$ = 84 million combinations (round up value). The correct answer is A.