pedigree

The pedigree below tracks the presence of attached earlobes through a family's generation. Having attached earlobes is an autosomal recessive trait.

What is the genotype of individual I-1?

• X^eY

• ee

• EE

• Ee

• X^EY

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

The pedigree tracks Duchenne Muscular Dystrophy (DMD) through several generations. DMD is an X-linked recessive trait.

If individuals I-1 and I-2 had another son, what is the chance that he would have DMD?

• 0%

• 25%

• 50%

• 100%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Explain the inheritance of this rare trait in the pedigree.

• The trait is X-linked recessive, inherited through the mothers.

• The trait is autosomal recessive.

• X-linked recessive.

• The trait is autosomal dominant.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What is the symbol for an Affected Male? 

• Half Circle 
• Half Square 
• Full Shaded Circle 
• Full Shaded Square 

How are mates identified in a Pedigree? 

• Vertical Line 
• Horizontal Line 

Offsprings are represented by....

• Horizontal Line 
• Vertical Line 

Tags

NGSS.MS-LS3-2

What is the mode of inheritance shown here?

• Autosomal Dominant
• Autosomal Recessive
• Sex Linked Recessive

Tags

NGSS.HS-LS3-1

What is the mode of inheritance shown here?

• Autosomal Recessive
• Autosomal Dominant
• Sex Linked

Tags

NGSS.HS-LS3-1

• Not affected Female
• Not affected Male
• Affected Male
• Affected Female

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

• Not Affected Male
• Not Affected Female
• Affected Male
• Affected Female

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2