Punnett Squares

Which of the following is an example of a phenotype.

• Ab

• Heterozygous

• DNA

• Red Hair

AA, Dd, and yy would all be examples of...

• Phenotypes

• Genotypes

Let's say that the allele "B" codes for Brown eyes and is dominant while the allele "b" codes for blue eyes and is recessive. If two brothers born exhibit the genotypes Bb and BB, which of the following statements will be true?

• The brothers will have the same phenotype and genotype.

• The brothers will have a different phenotype but the same genotype.

• The brothers will have a different genotype but the same phenotype.

• The brothers will be bald later in life.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Which of the following traits is HOMOZYGOUS dominant?

• AA

• Bb

• CD

• aa

Tags

NGSS.HS-LS3-1

In Codominance, two dominant alleles are _______________.

• Both incompletely expressed leading to a blending of the two alleles. (think blended colors)

• Both alleles are individually fully expressed at the same time. (think spots on a cow)

• Both canceled out by each other.

• Going to lead to chromosomal abnormalities.

Which of the following is NOT a possible genotype of the following cross between a person with type AB blood and type B blood

• BB

• AB

• BO

• AA

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Colorblindness is X-linked and recessive. Can a colorblind woman and a non-colorblind man have a SON who is NOT colorblind?

• Yes

• No

• Probably

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What belongs in the missing block of this punnett square?

• DD

• Dd

• dd

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

The following trait follows the pattern of incomplete dominance between the cross of a pure red and a pure white snapdragon flower. Which genotype fits in the missing box?

• RR

• R'R'

• RR'

• rr

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

The following punnett square depicts the x-linked cross of a female who carries hemophilia with a man showing no symptoms. Fill in the genootype represented by the blank box in the punnett square.

• X^H X^H

• X^h X^H

• X^H Y

• X^h Y

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2