What is meant by a phenotype ratio in a penned square?
A phenotype ratio in a Punnett square represents the predicted ratio of different observable traits or phenotypes that may result from a genetic cross between two organisms. A Punnett square is a diagram used to predict the probability of different genotypes and phenotypes in the offspring of a genetic cross.
Each square in the Punnett square represents a possible genotype combination resulting from the combination of alleles from the parental organisms. The genotypes in these squares can be used to determine the phenotypes (observable traits) of the offspring.
The phenotype ratio in a Punnett square indicates the expected ratio of different observable traits or phenotypes that may be observed in the offspring. It is expressed as a ratio, such as 3:1 or 1:2:1, where each number represents the proportion or number of individuals expected to exhibit a particular phenotype.