What are the genotypes of predicted homozygous offspring?

The genotypes of a homozygous offspring are "AA" and "aa".

Explanation:

When we say that an individual is homozygous for a particular trait, we are saying that he has in his genotype two equal alleles for that trait. Since each cell has two equal alleles, all gametes of a homozygous individual are equal.

Considering, for example, the allele "A" to indicate melanin production in humans and the allele "a" to indicate lack of production, we can represent homozygous individuals as AA or aa. This means that we have recessive homozygotes (aa) and dominant homozygotes (AA). In this case the dominant homozygotes are capable of producing melanin while the recessive ones are albino.

what subject is this

the relative atomic mass of an element is the mass of one atom of that element, relative to 1/12th of the mass of a  1212c atom. to convert to an absolute mass in kg, it is necessary to multiply by  1.661×10−271.661×10−27.

the relative atomic mass is roughly equal to the number of neutrons, plus the number of protons, in the nucleus of the atom.

for elements with more than one stable isotope (different types of nucleus with different numbers of neutrons but the same number of protons), the quoted mass is usually the average mass, weighted by the relative abundance of the different isotopes.