Genetics Test Review

_________ are made up of letters/alleles

• Genotypes

• Phenotypes

_________ reproduction creates children that are varied or different from their parents.

• asexual

• sexual

Ww is crossed with Ww. What percentage of offspring are recessive.

• 75%

• 25%

• 0%

• 100%

Bb is crossed with Bb. What percentage of offspring are dominant?

• 25%

• 50%

• 100%

• 75%

RR red birds are crossed with rr yellow birds. Red is completely dominant. What percentage of offspring will be yellow?

• 50%

• 75%

• 0%

• 100%

Which type of reproduction produces offspring with genetic variation?

• asexual - mitosis

• sexual - meiosis

• asexual - meiosis

• sexual - mitosis

Two dogs breed 50 puppies in their lifetime.

25 are black (dominant) and 25 are white (recessive). What are the likely genotypes of the parents?

• Bb and bb

• BB and bb

• Bb and Bb

• bb and bb

Two flies have 100 offspring.

78 offspring have red eyes and 22 offspring have white eyes. What are the likely genotypes of the parents?

• RR and rr

• RR and Rr

• Rr and Rr

• Rr and rr

You get one set of these from each of your parents...

• meiosis

• chromosomes

• mitosis

• diploids

A colorblind male has children with a heterozygous female (carrier)? Will any of their children be colorblind?

• yes -all of them

• no - none of them

• yes - some of them