Genetics

Which term correctly describes an individual with a pair of the same alleles for a trait? 

• homologous
• heterozygous
• homozygous
• heterologus

B = brown fur  b = white fur
In the punnett square, what is the probability for white fur? 

• 0%
• 25%
• 50%
• 75%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What allele combination should go in the missing box?

• AA
• Aa
• aa
• none of these

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What are the possible genotypes and their percent chance for this cross?

(Click the picture to see it without the text)

• TT = 25% Tt= 50% tt=25%

• all tall

• TT= 75% tt = 25%

• Tt = 100%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

How are individuals III-2 and II-4 related?

• Brother and sister

• Dad and daughter

• Uncle and niece

• Grandfather and granddaughter

On this pedigree, the allele for white forelock is dominant. The couple labeled 2 both have white forelock, but have a daughter who does not have curly hair. Which of the following best describes couple 2?

• the male is heterozygous and the female is heterozygous.

• the male is homozygous recessive and the female is homozygous dominant.

• the male is homozygous dominant and the female is heterozygous

• the male is heterozygous and the female is homozygous recessive.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Observe the pedigree. What is the most likely genotype for person III-3?

• GG because the trait is recessive.

• Gg because the trait is recessive

• gg because the trait is recessive

• Gg because the trait is dominant

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

The pedigree shows the inheritance of a recessive disorder. If indivduals 5 & 6 have another child, what is the chance that their second child will inherit the disorder?

• 0%

• 25%

• 50%

• 75%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

A calico cat shows both the traits for orange fur and black fur. What kind of inheritance pattern is this?

• Incomplete Dominance

• Co Dominance

• Sex-Linked

• Polygenic

A red flowered plant (RR) breeds with a White flowered plant (WW). The gene for petal color in these plants expresses incomplete dominance. What percentage of the offspring will have pink (RW) flowers?

• 0%

• 25%

• 50%

• 100%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2