Heredity Punnett Squares and Pedigrees

Cross 2 heterozygous tall pea plants. Tall (T) is dominant to short (t). What fraction of the offspring do you predict will be tall?

• 1/4

• 2/4

• 3/4

• 4/4

Tags

NGSS.HS-LS3-1

NGSS.HS-LS4-3

The trait this pedigree traces is recessive because it skips a generation and individuals can be carriers. What is the most likely genotype for person III-3?

• GG

• Gg

• gg

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

The genetic makeup of an organism usually represented by alleles. (Ex. AA, Aa, or aa)

• Genotype

• Phenotype

• Heterozygous

• Homozygous

When the alleles that represent a gene are different. (Aa)

• Genotype

• Phenotype

• Heterozygous

• Homozygous

What color eyes do the parents have?

• They both have blue

• They both have brown

• One has blue and one has brown

• Depends on how the genetics work together

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Which of the following are GENOTYPES? (select all correct answers)

• black hair

• homozygous dominant

• heterozygous

• blue eyes

• BB

Which of the following represents alleles for the homozygous recessive genotype?

• Aa

• aa

• AA

Dominant alleles are represented by a:

• Male gene

• lowercase letter

• recessive trait

• capital letter

A recessive genotype will show when:

• The offspring have both dominant and recessive genotypes

• The offspring has two recessive genotypes

• The offspring have two dominant genotypes

• The mother has blue eyes

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

You create a punnett square to determine the probability of hair color being passed to offspring. Brown hair color is dominant. Blond hair is recessive. Both parents have brown hair. The mother is homozygous dominant. The father is heterozygous. What is the probability that the offspring will have brown hair?

• 100%

• 75%

• 50%

• 25%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3