Which statement about Punnett Squares is true?

Which statement about Punnett Squares is true?

• A. To predict possible genotypes of offspring
• B. To measure allele frequencies in a population
• C. To sequence DNA
• D. To observe metabolic pathways

Answer: (A)

Punnett squares are used to predict the possible genotypes of offspring based on the alleles each parent can pass down. By laying out the potential gametes from each parent in a grid, every box represents a possible genotype for a child and shows the relative likelihood of each outcome. This visualization helps you see how dominant and recessive alleles combine and estimate the chances of different genotype (and often phenotype) results for a cross. It isn’t a tool for measuring allele frequencies in a population, which requires sampling many individuals and calculating how common each allele is across the gene pool. It also doesn’t sequence DNA, which is about determining the exact nucleotide order, nor does it describe metabolic pathways, which are about biochemical reactions in organisms. So the statement that Punnett squares predict possible genotypes of offspring is the correct description of what they do.

Punnett squares are used to predict the possible genotypes of offspring based on the alleles each parent can pass down. By laying out the potential gametes from each parent in a grid, every box represents a possible genotype for a child and shows the relative likelihood of each outcome. This visualization helps you see how dominant and recessive alleles combine and estimate the chances of different genotype (and often phenotype) results for a cross.

It isn’t a tool for measuring allele frequencies in a population, which requires sampling many individuals and calculating how common each allele is across the gene pool. It also doesn’t sequence DNA, which is about determining the exact nucleotide order, nor does it describe metabolic pathways, which are about biochemical reactions in organisms. So the statement that Punnett squares predict possible genotypes of offspring is the correct description of what they do.