4. For the purpose of this problem, assume that in humans the gene for brown eyes is dominant to that for blue eyes (a simplification). A brown-eyed man marries a blue-eyed woman, and they have eight brown-eyed children. What are the genotypes of all the individuals in the family?

What is the probability that the first child produced in parents who are both heterozygous for brown eyes will be blue-eyed?

Question in English

What differences are there between phenotype and genotype?

Answer/Explanation:

The genotype of an organism is its full set of genetic information in relation to a particular gene or genes. This is distinct from the phenotype, which is how the genotype is displayed, i.e. the observable characteristics that result from the genotype

Therefore, the genotype determines the phenotype of an individual. Phenotypes can influence genotypes in a large population over time, as fitness is determined by phenotype. Therefore, fitter genotypes will be selected for in a population over time.