Human Pedigrees

How many daughters did I1 and I2 have?

• 1

• 2

• 3

• 4

How are II-5 and II-7 related?

• cousins

• married

• siblings

• uncle/nephew

Tags

NGSS.HS-LS3-1

Which type of trait (dominant or recessive) usually skips a generation?

• Dominant

• Recessive

How many females are in this pedigree?

• 3

• 4

• 6

• 7

If this pedigree is tracing a recessive disorder, what is the genotype of individual II-3?

• HH

• Hh

• hh

• heterozygous

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

This pedigree is tracing straight thumbs, which are dominant. What is the genotype of II-5?

• TT

• Tt

• tt

• straight thumb

• hitchhiker's thumb

Tags

NGSS.HS-LS3-1

This pedigree shows family members that have Tay Sachs, a recessive disease. What is II-3's genotype?

• GG

• Gg

• gg

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

This pedigree shows family members that have Tay Sachs, a recessive disease. What is IV-1's genotype?

• GG

• Gg

• gg

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

This pedigree shows family members that have Tay Sachs, a recessive disease. Would the carriers have the disease?

• Yes because they would have one recessive allele

• Yes because they would have two recessive alleles

• No because they would have one dominant allele

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

In the second generation, how many people are carriers of the trait?

• 2

• 3

• 5

• 6

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2