17. When might a difference between the members of a population be passed to future generations? 18. The study of factors that affect gene frequencies in the members of a species of sexually reproducing organisms living in the same area is known as genetics.​

in the year 2850, humans successfully colonized mars. the martian modules that were constructed could hold only a small population of people. it is now a century later, and the population on mars has grown to 600 people. of the current mars population, 45 people express the recessive phenotype for phenylketon- uria (pku) syndrome (pp genotype).

explanation:

what exactly is the question lol