Pedigrees (autosomal and x-linked)

What does a shaded circle represent?

• unaffected female

• affected female

• unaffected male

• affected male

How many generations are shown in this pedigree?

• 1
• 2
• 3
• 4

Is this pedigree tracking a disorder that is dominant or recessive?

• Dominant

• Recessive

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

If this pedigree shows a recessive disorder, what MUST the genotype of generation II individual 2 be?

(individual 4)

• HH

• Hh

• hh

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What is the family relationship between the two affected individuals in this pedigree?

• Mother and daughter

• Grandmother and granddaughter

• Aunt and niece

• Sisters

Does this pedigree show a dominant or recessive trait?

• Dominant
• Recessive

What is the genotype for III-3?

(generation 3 individual 3)

• GG

• Gg

• gg

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What is the genotype for II-4?

(generation 2 individual 4)

• GG

• Gg

• gg

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

The pedigree is showing a _____________ trait.

• autosomal dominant

• autosomal recessive

• sex linked recessive

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What is the genotype of the mother?

• BB
• bb
• Bb
• BB or Bb

Tags

NGSS.HS-LS3-1