Capital letters on Punnett Squares represent dominant genes, while lowercase letters represent recessive genes. For example, if the trait "T" is a tall gene and the trait "t" is a short gene. When you get your results (if both parents are heterozygous for tallness, Tt) you get four possible results, 1 TT (homozygous tall), 2 Tt (twice, heterozygous tall Tt), and 1 tt (homozygous short). If there is a dominant gene there, that gene will be displayed. Only if there are two recessive genes will the recessive trait be displayed.
In a Punnett square, a capital letter represents a dominant allele.
capital letter
Capital letters on Punnett Squares represent dominant genes, while lowercase letters represent recessive genes. For example, if the trait "T" is a tall gene and the trait "t" is a short gene. When you get your results (if both parents are heterozygous for tallness, Tt) you get four possible results, 1 TT (homozygous tall), 2 Tt (twice, heterozygous tall Tt), and 1 tt (homozygous short). If there is a dominant gene there, that gene will be displayed. Only if there are two recessive genes will the recessive trait be displayed.
A capital letter in a Punnet Square represents a dominate allele.
A dominant gene
The letters to the left are the two alleles (the genotype) of one parent and the letters above is the other parents genotype. If the letter is capital it means the trait is dominant and if the letter is lowercase, it's recessive
The letters represent the alleles, or variations, of a given trait. So for example T might represent tall and t represents short. The capital letter always corresponds to the dominant trait and the lowercase letter corresponds to the recessive trait.
On the outside of the Punnett Square you put the genotype or two alleles of the parents.
In a Punnett square, a capital letter denotes the dominant allele and a lowercase letter denotes the recessive allele.
recessive
Punnett square
a pair of recessive genes