TEKS 9A

What is the phenotype of the offspring? (A-Brown hair; a-blond hair)

• 50 % Brown Hair and 50% Blond Hair

• 25 % Brown Hair and 75% Blond Hair

• 75 % Brown Hair and 25% Blond Hair

• 0% Brown Hair and 100% Blond Hair

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What percent of offspring will have the recessive trait?

• 25

• 50

• 75

• 100

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Which of the following is a phenotype?

• Aa

• red hair

• heterozygous

• DNA

Dominant alleles are represented by a:

• Male gene

• lowercase letter

• recessive trait

• capital letter

How many boxes would say BB?

• 1

• 2

• 4

• 0

T - tall and t = short
In the punnett square below, what belongs in the missing square

• tt

• Tt

• Bb

• TT

If B = brown hair and b = blonde hair, what is the probability of brown hair?

• 25%

• 50%

• 0%

• 75%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

Black hair color is dominant to white hair color in mice.  Determine the phenotypic ratio for the offpring of a heterozygous black mouse and a white mouse.

• 4 Black: 0 White

• 3 Black: 1 White

• 2 Black: 2 White

• 0 Black: 4 White

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-3

In a certain species of rabbits, black coat color is dominant over brown coat color. What is the probability of producing a rabbit with brown coat color from two rabbits that are both heterozygous for black coat color?

• 0%

• 25%

• 75%

• 100%

Tags

NGSS.HS-LS3-3

Which of the following genotypes is homozygous dominant?

• A

• Aa

• AA

• aa