Question

What is the genotype at the Q gene?

Answer 1

The genotype of the Q gene is homozygous dominant because it has 2 dominant genes and when a genotypes has two of the same type of genes it is homozygous. If it has different genes it is heterozygous. 

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Answer 2

The genotype at the gene "Q" is QQ (homo-zygous dominant)

• In genetics, an individual is homo-zygous when the two gene variants or 'alleles' at a given locus are the same; whereas an individual is heterozygous when the two alleles are different.

• Moreover, complete dominance occurs when an allele called 'dominant' masks the expression of another 'recessive' allele of the same gene in heterozygous individuals.

• In a genotype, the uppercase letters normally represent the dominant alleles, whereas lowercase letters represent the recessive alleles.

In consequence, in this case,

1. The genotypes QQ and UU denote homo-zygous dominant traits for the genes 'Q' and 'U', respectively.
2. The genotypes Rr and Ss denote heterozygous traits for the genes 'R' and 'S', respectively.
3. The genotype tt denotes a homo-zygous recessive trait for the gene 'T'.

In conclusion, in this case, the genotype at the gene "Q" is QQ.

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