Genetics Review

Brown fur (B) is dominant to white fur (b). If an organism's genotype is Bb, what is its phenotype?

• brown

• white

• tan

• Brown and white

Tags

NGSS.MS-LS3-1

Brown fur (B) is dominant to white fur (b). If a homozygous dominant (BB) bear is crossed with a heterozygous bear (Bb), what percentage of the offspring will have brown fur?

• 25%

• 50%

• 75%

• 100%

Tags

NGSS.HS-LS3-2

NGSS.HS-LS3-3

Round seeds are dominant to wrinkled seeds. If 2 heterozygous round seeds (Rr) are crossed, what percentage of the offspring will be wrinkled?

• 25%

• 50%

• 75%

• 100%

Which genotype is heterozygous?

• DD

• Dd

• dd

In snapdragons, flower color is incompletely dominant. If a red flower (Rr) is crossed with a white flower (rr), what is the phenotypic ratio of the offspring?

• 4 red:0 pink: 0 white

• 2 pink: 2 white

• 2 red/white: 2 white

• 1 red: 2 pink: 1 white

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

If a man with Type B blood (BO) marries a woman with Type A blood (AA), what are the possible blood types of their offspring?

• A, B, AB, O

• A, B, O

• A, AB

• A, B

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

The genotype dd is

• Homozygous Dominant

• Homozygous Recessive

• Heterozygous

A man who has AB blood marries a woman with AB blood. What percentage of their offspring could have Type A blood?

• 0%

• 25%

• 50%

• 75%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

An insect can be blue (BB), green (GG), or blue/green striped (BG). What type of inheritance is this?

• complete dominance

• incomplete dominance

• sex-linked

• codominance

Plants can be tall, medium or short. What type of inheritance is this?

• codominance

• incomplete dominance

• complete dominance

• sex-linked