AP BIOLOGY

Detailed explanation-1: -Pea plant is a diploid plant and has 7 pairs of chromosomes. Haploid number of chromosomes would be 7. Therefore, pea plants have 7 linkage groups.

Detailed explanation-2: -The total number of linkage groups in an organism equals to the number of autosomes in its haploid cell. Pisum sativum has seven pairs of chromosomes which mean that the number of autosomes in its haploid cell is 7. Hence, a total number of linkage groups will be 7 provided all the genes are mapped.

Detailed explanation-3: -So we can say that there are 23 linkage groups in man which is equal to the haploid number of chromosomes.

Detailed explanation-4: -Explanation: If 2n=14, then there are 7 chromosomes. Linkage groups are groups of genes that are so close together on a chromosome that they tend not to assort independently (i.e. recombination rarely occurs between them).