Pedigree Quiz

The pedigree above is an example of:

• dominant

• recessive

What is the genotype of individual IV – 2?

• HH

• HY

• hh

• Yh

A recessive pedigree is recognized by the trait...

• only showing in females.

• showing in every generation.

• skipping at least one generation.

• being found on the X chromosome.

Pedigrees are used to

• determine genotypes based on phenotypes.

• trace the family history of a chromosomal disorder.

• Predict the probable occurrence of a genetic disorder in offspring.

• all of the above.

• only answers b and c.

Whose chromosome determines the sex of babies in humans?

• Father

• Mother

• Both

If a child shows a recessive disorder, and his brother does not, his healthy parents' genotypes are;

• Hh and Hh

• HH and HH

• Hh and HH

• hh and hh

This pedigree is an example of:

• Dominance

• Recessiveness

What is the genotype of individual III-3?

• Rr

• rr

• RR

• AR

In a recessive disorder, a person that has the trait, but does not show it, are known as

• afflicted.

• carriers.

• heterozygous

• both b and c.

How many boys did the mother and father from the first generation have?

• 2
• 4
• 5
• 6