Mode of Inheritance Pedigrees

This pedigree represents the inheritance of hemophilia in this family. How many of the males DO NOT HAVE the hemophilia trait?

• 8

• 5

• 2

• 3

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

Huntington's Disease is a dominant trait.
What is the correct genotype for individual I-2?

• HH

• Hh

• hh

• H_

Tags

NGSS.HS-LS3-1

In the second generation of this pedigree, how many people are carriers of the trait? *Remember: a carrier does not have the disorder/disease, but can pass it on to his/her children.

• 1

• 2

• 3

• 5

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

On this pedigree, the allele for curly hair is dominant. The couple labeled 2 both have curly hair, but have a daughter who does not have curly hair. Therefore, we can tell from the chart that for the couple labeled 2 -

• the male is heterozygous and the female is heterozygous.

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

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

The trait this pedigree traces is recessive because it skips a generation and individuals can be carriers. What is the most likely genotype for person III-3?

• GG

• Gg

• gg

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

If this pedigree shows a recessive disorder, what MUST the genotype of individual II-3 be?

• HH

• Hh

• hh

Tags

NGSS.HS-LS3-1

In a pedigree, which shape represents a male?

• circle

• square

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

• Brother and sister

• Dad and daughter

• Uncle and niece

• Grandfather and granddaughter

Tags

NGSS.HS-LS3-1

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.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Which of the following modes of inheritance is characterized by the trait appearing in every generation and affecting both males and females equally?

• Autosomal Dominant

• Autosomal Recessive

• X-linked Dominant

• X-linked Recessive