Punnett Squares = a tool used to make genetic predictions. A grid for organizing genetic information. It tells you the probability/ percentage.
They do NOT tell you with certainty how many offspring will have which traits.
Set - Up: 1 Parent's Genotype goes on top of chart, the other Parent's Genotype goes down the left side. It does NOT matter where you place each parent.
Use the 1st letter of the Dominant trait = Capital Letter the Recessive trait = lower case letter Inheriting Traits: You inherit 2 alleles for every trait.
Gene: = Chunk of DNA Allele = Variation that chunk can come in
Heterozygous: You inherited 1 Dominant and 1 Recessive allele
Homozygous: You inherited 2 of the same alleles
Homozygous Dominant: You inherited 2 dominant alleles (RR) Homozygous Recessive: You inherited 2 recessive alleles (rr)