What impact do cases a multiple alleles have on the number of kinds of phenotypes displayed in the population?

Which of the following is an example of environmental impacts on the expression of traits?   Heterozygous individuals of a plant species have pink flowers, whereas homozygous individuals have either red or white flowers.   An individual’s blood type depends on the interaction of the alleles A, B, or O.   Animal coat color shifts in response to seasonal changes in day length and temperature.

The ability to roll your tongue is a dominant trait that Alfred Sturtevant observed in 72% of people in a population study. What is the allele frequency of the tongue rolling allele?

If 60 individuals have the genotype AA, 28 individuals have the genotype Aa, and 12 individuals have the genotype aaWhat is the frequency of the a allele?

In fruit flies, the red allele is dominant to the allele for sepia eyes. In a certain population of 1000 fruit flies, 640 flies have red eyes while the remainder have sepia eyes. How many individuals would you expect to be homozygous dominant for red eye color?

What are the number of genotypes if a population has the following number of alleles for different genetic loci: 2 alleles 6 alleles 8 alleles