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Summary of Solving Punnett Squares
Summary of Solving Punnett Squares
Genotype Phenotype
Genotype Phenotype
Yy: 50% Yy: 50% yellow
Yy: 50% Yy: 50% yellow
yy: 50% yy: 50% green
yy: 50% yy: 50% green
1:1 ratio 1:1 ratio
1:1 ratio 1:1 ratio
Steps
Steps
Identify the Genotype and Phenotype
Identify the trait, and assign the letter
Fill out the key to the problem
ex. BB = Homozygous Dominant = Brown Hair
Identify the genotypes of the parents
Ex. BB x Bb
Setup the Punnett Square
Fill in the Punnett Square
Start with Parent 1, then do Parent 2
The dominant trait should be placed to the left of the box, and recessive moves to the right.
Find the percentages of the genotype and phenotype
Find the ratios for the genotype and phenotype
Exceptions to Mendel's Laws to Heredity
Exceptions to Mendel's Laws to Heredity
Additional examples beyond what Mendel foresaw in his research
Additional examples beyond what Mendel foresaw in his research
Within this slide deck, you will be able to see different type of examples of traits that may contain more than two alleles.
Within this slide deck, you will be able to see different type of examples of traits that may contain more than two alleles.
Use the practice packet to print out and use as additional support through these examples
Use the practice packet to print out and use as additional support through these examples
Pedigrees
Pedigrees
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