If the yellow allele is dominant (Y) and the green allele is recessive (y), what are the possible genotypes a yellow offspring?

Aboy with an extra x chromosome probably has which of the following syndromes?

All but one describes an effect of aging on the digestive system. a) decreased acid secretion b) decreased elasticity of stomach c) capacity to resist damage decreases d) food remains in stomach for less time

What does the hardy-weinberg principle relate to? a. chances of survival of an organism b. frequency of alleles in a population c. natural selection in a species d. causes of evolution among organisms