Pedigrees

How many alleles does a person carry for a trait?

• 1

• 2

• 3

• 4

Tags

NGSS.HS-LS3-1

Aa, DD, Bb, yy are all examples of ---

• genotypes.

• phenotypes.

Tags

NGSS.HS-LS3-1

In a pedigree, which shape represents a male?

• circle

• square

Which gender has an X and a Y chromosome?

• male

• female

Tags

NGSS.HS-LS3-1

On a pedigree, this symbol represents a ---

• not affected female.

• not affected male.

• affected male.

• affected female.

Tags

NGSS.HS-LS3-1

On a pedigree, this symbol represents a ----

• not affected male.

• not affected female.

• affected male.

• affected female.

Tags

NGSS.HS-LS3-1

How many individuals are there in the 3rd generation?

• 1

• 2

• 4

• 6

Tags

NGSS.HS-LS2-2

On this pedigree, the allele for curly hair is dominant. The couple labeled 2 both have curly hair, but have a daughter who does not have curly hair. Therefore, we can tell from the chart that for the couple labeled 2 -

• the male is heterozygous and the female is heterozygous.

• the male is homozygous recessive and the female is homozygous dominant.

Tags

NGSS.HS-LS3-1

The trait this pedigree traces is recessive because it skips a generation and individuals can be carriers. What is the most likely genotype for person III-3?

• GG

• Gg

• gg

Tags

NGSS.HS-LS3-1

What do we use pedigrees for?

• To look at families
• To make determinations about the offspring
• To track traits in families
• Nothing