Genotypic Ratios and Phenotypic Ratios for Punnett Squares

What does a Punnett square primarily help predict?

• The physical appearance of an organism.

• The genetic makeup of offspring.

• The environmental factors affecting an organism.

• The age of an organism.

For the first Punnett square shown, what is the genotype ratio for homozygous dominant : heterozygous : homozygous recessive?

• 1:1:1

• 1:2:1

• 2:1:1

• 1:1:2

If 'Tall' is dominant over 'Short', what is the phenotype ratio of Tall to Short offspring from the first Punnett square?

• 1:3

• 2:2

• 3:1

• 4:0

In a codominant inheritance pattern, if a chicken has both black (B) and white (W) alleles (BW), what would its feathers most likely look like?

• Completely black.

• Completely white.

• A mix of black and white (spotted).

• A new color, like gray.