Bio 101 Ch 21 Hw

If a person with type B blood marries a person with type A blood, what phenotypes can their children be?

types A, B, O, and AB

Julie has a genetic disorder. Julie and her husband, Shane, have three children, none of which have the genetic disorder. How is this disorder most likely inherited?

autosomal recessive

Which of the following terms refers to the genes of an individual? genotype, phenotype, gamete, probability, autosomal

genotype

When describing someone as "lactose intolerant", you are describing their

phenotype

Autosomal dominant disorder

-Marfan syndrome -Huntington's disease -Require inheritance of only one dominant allele

Autosomal recessive disorder

-Tay-Sachs Disease -Cystic Fibrosis (CF) -Phenylketonuria (PKU) -Sickle cell disease -Require inheritance of two recessive alleles

Which of the following genotypes is heterozygous? Aa, Ab, aB, ab, aa

Aa

Which of the following is an example of a recessive genotype? aa, Aa, short, AA, ab

aa

There is a trait with two alleles. One allele does for blue while the other allele codes for yellow. If this trait is inherited in a codominant manner, what color will the offspring be?

blue and yellow striped