Question

Question 6 1 pts You compare the genomes of two related species. You find that genes that regulate developmental processes (the ones that shape how the body forms) exhibit a lot of non-synonymous substitutions, while genes involved in basic cell function exhibit more synonymous substitutions. What does this indicate? The developmental regulation genes have undergone positive selection for changes in function, while the basic cell function genes have undergone purifying selection The developmental regulation genes have undergone purifying selection, while the basic cell function genes have undergone positive selection Both types of genes are being affected by genetic drift The developmental regulation genes are being affected by drift, while the basic cell function genes have a lower mutation rate Question 7 1 pts Which of the following is NOT true? Linkage disequilibrium is higher between loci that are close to one another on a chromosome than between loci that are at opposite ends of a chromosome Migration is the most important force breaking up linkage disequilibrium O A chunk of loci on a chromosome that are in strong linkage disequilibrium suggests that one of the loci in the middle of that chunk was probably under recent strong selection O When loci are in linkage disequilibrium, alleles at the two loci do not independently assort

Answer 1

6. Answer: The developmental regulation genes are being affected by drift, while the basic cell function genes have a lower mutation rate.

7. Answer: A chunk of loci on a chromosome that are in strong linkage disequilibrium suggests that one of the loci in the middle of that was probably under recent strong selection.

Explanation:

• The more closer the alleles are located on a chromosome higher is the frequency of getting inherited together.
• Distance between alleles on chromosome, genetic drift, mutation are some of the factors affecting linkage disequilibrium.