Human Pedigrees

In a pedigree, which shape represents a male?

• circle

• square

What is the mode of inheritance shown here?

• Recessive because it "skips" a generation

• Dominant because it shows up in every generation

Tags

NGSS.HS-LS3-1

In the second generation of this pedigree, how many people are carriers of the trait? *Remember: a carrier does not have the disorder/disease, but can pass it on to his/her children.

• 1

• 2

• 3

• 5

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

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

NGSS.HS-LS3-2

When examining or creating a PEDIGREE CHART, how would a female be represented

• Circle

• Square

• Triangle

• Diamond

What is a pedigree chart used for in genetics?

• To determine the age of fossils

• To track the inheritance of traits through generations

• To measure the length of DNA strands

• To identify the sequence of nucleotides in DNA

In a pedigree chart, what does a vertical line connecting two generations represent?

• Siblings

• Marriage or mating

• Parent and child

• Unrelated individuals

The pedigree below shows three generations of individuals within a family. The pedigree shows that the daughter in the third generation has a genetic trait, even though neither of her parents nor her siblings have the trait. How is this possible?

• It is not inherited

• It is recessive

• It is dominant

• It is only passed from female to female

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

When examining or creating a PEDIGREE CHART, how would a person who exhibits the trait be represented

• Shape is shaded in

• Shape is half shaded in

• Shape is left open

• Shape is missing

When examining or creating a PEDIGREE CHART, how would a male be represented

• Circle

• Square

• Triangle

• Diamond