Pedigree Basics

This symbol represents an...

• Unaffected Male
• Unaffected Female
• Affected Male
• Affected Female

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

This symbol represents an...

• Unaffected Female
• Unaffected Male
• Affected Male
• Affected Female

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Colorblindness is a recessive sex-linked trait. If B = normal & b = colorblind, which genotype represents a female with colorblindness. 

• X^BX^B 
• X^BX^b 
• X^bX^b 
• X^bY 

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Hemophilia is a recessive sex-linked trait. If H = normal & h = has hemophilia, which genotype represents a male with hemophilia. 

• X^HY
• X^HX^h
• X^hX^h
• X^hY 

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

All males receive their X chromosome from their ________.

• mother
• father
• brother
• sister

Tags

NGSS.HS-LS3-1

How many dominant alleles does an individual need in order to have the autosomal dominant trait?

• 0
• 1
• 2
• 3

How many recessive alleles does an individual need in order to have the autosomal recessive trait?

• 0
• 1
• 2
• 3

Tags

NGSS.HS-LS3-1

Which of the following could be the genotype of a carrier?

• BB
• Hh
• tt
• DD

Which of the following genotypes is homozygous dominant?

• BB
• Hh
• tt
• Dd

Which of the following genotypes is homozygous recessive?

• BB
• Hh
• tt
• Dd