The answer is : 32S has 16 neutrons, whereas 35S has 19 neutrons. If the isotope 32S has 16 protons and 16 neutrons, the isotope 35S will have 16 protons and 19 neutrons.
Im pretty sure its the genus
Don not know sorryyyyyyyyyuyyyyyyy
Genetic drift is the variation of population allele frequency, natural selection changes allele frequency by favoring those alleles that give an organism a reproductive fitness advantage