Flexi Homework Help Q&A

Punnett Squares

Summary:

A Punnett square is a chart that allows you to easily determine the expected percentage of different genotypes in the offspring of two parents.
You can predict the percentages of phenotypes in the offspring of this cross from their genotypes.
A Punnett square can also be used to determine a missing genotype based on the other genotypes involved in a cross.

Select from the frequently asked questions below

How do you figure out the percentage in a Punnett square?

If one parent has two D alleles for a given gene, and the other parent has two d alleles for the same gene, what will be the genotype in their offspring?

Who came up with the Punnett squares?

What are the genotypic and phenotypic ratios that result when crossing two heterozygotes?

Are Punnett squares always accurate?

How do I make a punnet square for blood types?

In guinea pigs, smooth coats are dominant over rough coats (s). If an SS guinea pig is crossed with a ss guinea pig, what ratio of smooth coat to rough coat guinea pigs in the offspring would you predict?

What ratio of guinea pigs in the offspring would you predict from a Ss x ss cross?

If you cross a purebred pea plant with green seeds and a purebred pea plant with yellow seeds what percent of their offspring will have green seeds

If you cross an AABb individual with an Aabb individual, what will the genotype ratio be in the next generation? What will be the phenotype ratio?

If you cross an AABb individual with an Aabb individual, what will the genotype ratio be in the next generation?

What should be assumed to solve a basic genetics problem, unless the problem specifies all the details?

Could I do hair color in a Punnett square?

What is the purpose of Punnett squares in genetics?