What term describes the combination of two alleles at a gene locus, such as Bb?

What term describes the combination of two alleles at a gene locus, such as Bb?

• A. Allele
• B. Genome
• C. Phenotype
• D. Genotype

Answer: (D)

At a gene locus in a diploid organism, two alleles come together to form the genotype. Bb is an example of a heterozygous genotype, showing two different alleles at that locus. An allele is a single variant, not the pair. The phenotype is the observable trait, shaped by genotype and environment. The genome is the entire genetic content of the organism. So the term for the two-allele combination at a locus is genotype.

At a gene locus in a diploid organism, two alleles come together to form the genotype. Bb is an example of a heterozygous genotype, showing two different alleles at that locus. An allele is a single variant, not the pair. The phenotype is the observable trait, shaped by genotype and environment. The genome is the entire genetic content of the organism. So the term for the two-allele combination at a locus is genotype.