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Dominant is the first gene variant in a phenotype from the two alleles of a gene and recessive has effect on the third allele of a phenotype.
Explanation:
The genetic phenomenon of masking of chromosome with one variant of allele or predominating the impact of one gene on its chromosomal copy is Dominance. In this phenomenon the first variant of gene is known as ‘dominant’ and the second one is ‘recessive’.
This phenomenon is not inherited by phenotype, it has a relative effect on two alleles of a gene where one is dominant on other and the recessive is on third allele. Dominant allele has functional protein but recessive does not have it.
People who have darker skin have more melanin which is a black or dark brown pigment in the skin. When we are out in the sun our skin produces more melanin, which helps our skin be more resistant in the sun. This is why we tan.
The answer would be a,b and c statements are all true. Billie cannot have the cow's milk as cow's milk has high contents of protein and minerals such as calcium and phosphorus. It also does have fat content and in addition does not have enough vitamin C and iron for infants.