Pedigrees

The following pedigree chart shows _______ females and ______ males that DO NOT have the trait.

• 7, 3

• 4, 4

• 3, 2

• 3, 3

• 57, 93.5

Tags

NGSS.HS-LS3-1

How many generations are shown in this pedigree?

• 1
• 2
• 3
• 4

How many daughters did the mother and father from the first generation have?

• 2

• 4

• 5

• 6

Tags

NGSS.HS-LS3-1

How many males are carriers?

• 2

• 3

• 4

• 5

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS4-3

Is this pedigree dominant, recessive, or sex-linked recessive?

• Dominant

• Recessive

• Sex-Linked Recessive

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Is this pedigree dominant, recessive, or sex-linked recessive?

• Dominant

• Recessive

• Sex-Linked Recessive

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

If a child shows a recessive disorder, and his brother does not, his healthy parents' genotypes are;

• Hh and Hh

• HH and HH

• Hh and HH

• hh and hh

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Examine the pedigree. The allele for the presence of a widow’s peak is dominant. Therefore, we can tell from the chart that in the couple labeled 2:

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

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

If hemophilia is a sex-linked recessive trait, what genotype would individual III-3 have?

• X^bX
• X^bX^b
• X^bY^b
• X^bY

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Why do all the daughters in Generation II carry the colorblind gene?

• Because mom passed on the gene.
• Because dad passed on the X chromosome.
• Because their brother has it.
• Because their brother gave it to them.

Tags

NGSS.HS-LS3-1