In 2003, the first complete human genome was sequenced, The genomes of different people have small changes in the sequence of the
DNA bases.
Describe how these changes in DNA sequence can affect the individuals and how
sequendng a person's genome could influence their medical treatments

answer is a

explanation:

genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).

answer; both surfaces of the membrane are nonpermeable