A Punnett square is a tool used in genetics to predict the possible genotypes and phenotypes of offspring from a cross between two parents.
Here's what it does:
* Represents Parental Genotypes: It visually lays out the possible gametes (sperm and egg cells) that each parent can produce.
* Combines Gametes: The square shows the possible combinations of these gametes when they fuse to create offspring.
* Predicts Genotype Frequencies: It reveals the probability of different genotype combinations in the offspring.
* Predicts Phenotype Frequencies: By knowing the genotypes, you can predict the probability of different physical traits (phenotypes) appearing in the offspring.
In essence, a Punnett square helps visualize and predict the inheritance of traits from parents to offspring.
Let me know if you'd like a specific example of how to use a Punnett square!