EOC

What is the genotypic ratio of the offspring?

• 3:1

• 1:3

• 1:2:1

• 2:2

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What are the phenotype percentages of the offspring?

• 50 % Brown fur and 50% White fur

• 25 % Brown fur and 75% White fur

• 75 % Brown fur and 25% White fur

• 0% Brown fur and 100% White fur

What are the possible genotypes 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

An offspring will receive how many alleles from each parent to determine a specific trait?

• one

• two

• three

• five

Tags

NGSS.HS-LS3-1

In pea plants, the tall allele is dominant to the short allele. What key would demonstrate this?

• Tall = T
  Short = S

• Tall = T
  Short = t

• Tall = t
  Short = T

• Tall = TT
  Short = tt

A heterozygous long-tusked elephant is crossed with a homozygous recessive short-tusked elephant. What is the probability of the offspring having short tusks?

• 0%

• 25%

• 50%

• 75%

Tags

NGSS.MS-LS3-1

Which of the following genotypes is homozygous dominant?

• Yy

• yY

• yy

• YY

If you cross a black guinea pig with a white guinea pig and the offspring are gray, what type of dominant trait would that be.

• incomplete dominance

• codominance

• codependant

• cooperative

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

In rabbits, black fur (B) is dominant over brown fur (b). If a rabbit has brown fur, what can you conclude about its genotype?

• It is BB.

• It is Bb

• It is brown

• It is bb.

This is an example of

• Complete dominance

• Mendelian Genetics

• Codominance

• Incomplete Dominance

Tags

NGSS.HS-LS3-2