Pedigrees and X linked traits

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

• Cousins
• Dad and Daughter
• Uncle and Niece
• Grandpa and Granddaughter

Tags

NGSS.HS-LS3-1

If a woman is a carrier for a sex linked recessive trait of hemophilia and her husband has hemophilia, which of the following is true

• All sons will have hemophilia
• all daughters will have hemophilia
• 50% of daughters and 50% of sons have hemophilia
• 100% of sons have hemophilia and 100% of daughters are carriers

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What percentage of the offspring will have this recessive disease?

• 0%
• 25%
• 50%
• 75%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What percentage of the female offspring will be a carrier for this recessive disease?

• 0%
• 50%
• 100%
• 25%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-3

Looking at this pedigree, how many female family members are carriers?

• 1
• 3
• 10
• 7

Looking at this pedigree, how many family members have the disease?

• 4
• 7
• All
• None

I have 2 X chromosomes. What am I?

• Male
• Female

I have 1 X chromosome and 1 Y chromosome. What am I?

• Male
• Female

How many children did individuals I-1 and I-2 have?

• 2
• 4
• 6
• 8

Is it possible for individual IV-2 to be a carrier? Why?

• No, because her parents don't have the trait.
• No, because she doesn't have the trait.
• Yes, because her siblings have it.
• Yes, because her parents are carriers.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2