Dihybrid Cross 10.2

How many offspring do you have in a dihybrid cross?

• 8

• 5

• 12

• 16

Tags

NGSS.HS-LS3-3

B = brown eyes

b = blue eyes

What is true about these brothers that have brown eyes? One has a genotype of BB and the other Bb.

• they have same genotype but different phenotypes

• they have same phenotype but different genotypes

• they have different genotypes and phenotypes

• they have same phenotype and genotype

Tags

NGSS.HS-LS3-1

If you have a parent who has GgBb as their genotype, what are the possible alleles they could donate to their gametes?

• GB, GB, gb, gb

• GB, Gb, gB, gb

• GG, BB, gg, bb

• Gb, Gb, Gb, GB

Tags

NGSS.HS-LS3-1

A genotype is ...

• The physical appearance of a trait

• None of these answers are correct

• The genetic makeup of an organism

• The separation of chromosomes

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What is the expected phenotypic ratio for a dihybrid cross involving parents heterozygous for both traits?

• 8:2:2:4

• 4:4:4:4

• 9:3:3:1

• 6:2:2:6

Tags

NGSS.HS-LS3-3

A tomato plant has a genotype Wwgg. Select all possible genetic combinations that could be present in a single grain of pollen from this plant.

• Wg

• WwGg

• Wg, wg

• Wg, wg, WG

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

A ________ trait is expressed even if the individual has only one copy of the allele.

• recessive

• dominant

Tags

NGSS.HS-LS3-1

Which genotype is represented for having homozygous dominant for both traits?

• AaBb

• AABb

• AABB

• AaBB

Tags

NGSS.HS-LS3-1

How many gametes will an individual with genotype AaBB produce?

• 1

• 2

• 3

• 4

Tags

NGSS.HS-LS3-2

A recessive gene can be expressed (shown) if the genotype is...

• homozygous

• heterozygous

• either

• none of these answers work

Tags

NGSS.HS-LS3-1