What is the probability that, in an organism with a haploid number of 13, a sperm will be formed that contains all 13 chromosomes whose centromeres were derived from maternal homologs?

Answer is 0.00012.

Let us build a scenario to better understand the given problem. Let A (father) and B (mother) be the parents of C (male child). Now A will make two sets of sperm that will have 13 chromosomes each and similarly B will make two ovum that will have 13 chromosomes each. C will get 13 chromosomes from mother and 13 from father after a successful crossover. So the probability that a chromosome is from either A or B in C is 0.5. Now C makes his sperms, these are haploid cells containing 13 chromosomes. The probability that all the 13 chromosomes are from B will be given by the following product,

(13 times because there are 13 chromosomes in C's sperm)

Therefore the probability that C's sperm contain all maternal homologs is .

1. amino acid refers to the fundamental building block of proteins, comprising of an amino group and a carboxyl group.

2. catalyst refers to any substance, which increases the rate of chemical reaction without being used up in the reaction.

3. a complex molecule containing he genetic code is dna or deoxyribonucleic acid.

4. an enzyme refers to a molecule of protein, which is unique in accelerating up a particular chemical reaction in the biological systems.

5. nucleic acid refers to an sequence of sugars, phosphates, and nitrogenous bases, for example, dna and rna.

6. a protein refers to a large, composite organic molecule comprising of a huge number of amino acids associated together with the of peptide bonds.

7. rna refers to a nucleic acid that takes part in the production of proteins.

8. substrate refers to a compound, which takes part in a chemical reaction, and is chemically modified by the reaction.