What is the change in the characteristics of a population of living things over time by natural selection?

How does the molecular clock work? a. it analyzes the brain functionality of two different species.b. it examines and compares the physical characteristics of two different species.c. it illustrates relationships between two different species.d. it compares the number of mutations that exist in the dna of two different species.

How does the study of genetic disorders such as pku biologists understand normal alleles?

What is the genotype of the male circled in pink? ο χου lo xay xaya done answer was xay