Punnett Square Basics

When both alleles for a trait are different that genotype is...

• homozygous

• heterozygous

When both alleles for a trait are the same that genotype is

• homozygous

• heterozygous

The physical outcome of your genetics

• genotype

• phenotype

The genetic makeup of an organism

• genotype

• phenotype

Tags

NGSS.HS-LS3-2

Using the letter A, write out the heterozygous genotype.

Using the letter A, write out the homozygous dominant genotype.

Using the letter A, write out the homozygous recessive genotype.

If you cross two heterozygous organism, what % of the offspring will be homozygous recessive?

• 0%

• 25%

• 50%

• 75%

• 100%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

If you cross a homozygous dominant organism with a homozygous recessive organism, what % of the offspring will be heterozygous?

• 0%

• 25%

• 50%

• 75%

• 100%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

In rabbits, white fur is dominant to black fur. If a heterozygous rabbit is crossed with a homozygous recessive rabbit - what is the probability for black fur?

• 0/4

• 1/4

• 2/4

• 3/4

• 4/4

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-3