In a monohybrid cross, what does the term genotype ratio refer to?

• A. The percentage of gametes produced by each parent that carry the dominant allele ($A$)
• B. The relative proportions of different genotypes among the offspring (e.g., $1:2:1$ for $AA:Aa:aa$)
• C. The relative proportions of different phenotypes among the offspring (e.g., $3:1$)
• D. The probability that a single offspring will be homozygous dominant ($AA$)

Answer: (B)