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What is the probability that a human individual would receive the entire haploid set of chromosomes from his/her grandfather?

Options

  1. A1 2
  2. B1 2 23
  3. C1 2 2
  4. D1 2 46

Correct answer

B. 1 2 23

Step-by-step solution

Human's shows XX-XY type of sex determination, where females are homogametic and males are heterogametic. An organism has 23 chromosomes from its father and 23 from his mother. Since there is a 50 % chance of getting paternal grandmother's chromosome for each of the 23 chromosome in the cell, the probability of getting every one of the 23 chromosome from one grandparent, is 0 . 5 23 or   1 2 23 or 1 in 8 million.

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