Punnett Squares

This model is called a 

• Punnett Square

• pedigree

• family tree

The alleles across the top and on the sides

• are body cells 

• are muscles cells

• are sex cells 

• are nervose cells

Each box contains the 

• genotype

• phenotype

• both the genotype and the phenotype

Homozygous means...

• Different letters

• Same letters

Heterozygous means

• different letters

• the same letters

Heterozygous means

• Different letters

• Same letters

What will be the genotype for the homozygous tall man?

• tt

• Tt

• TT

What is the genotype for the heterozygous tall woman? 

• TT

• tt

• Tt

What is the genotypic ratio?

• 25% TT
  75% Tt

• 100% Tt

• 50 % TT
  ​50% Tt

• 25% Tt
  75% TT

What is the phenotypic ratio?

• 75% Tall

• 50% Tall

• 100% Tall

• 25% Tall