Genetics Quiz Review

Which of the following is a homozygous dominant genotype?

• HH

• hh

• Hh

• all of the above

Which combination of alleles represents the same phenotype but different genotype?

• Aa and AA

• Aa and aa

• AA and aa

• Aa and Aa

The allele represented by a capital letter - T, R, S

• dominant allele

• recessive allele

• phenotype

• heterozygous

The allele hidden by the dominant allele (lowercase letter)

• heterozygous

• homozygous

• recessive allele

• genotype

Examine the Punnett square below. It shows a cross between two flowering plants. ​ ​ Which flower color is dominant?

• green

• white

• purple

• red

Who is most affected by lethal recessive alleles?

• homozygous recessive individuals

• heterozygous recessive individuals

• homozygous dominant individuals

• homozygous dominant individuals

Which statement summarizes the law of independent assortment?

• A parent can pass on only one allele of each gene to any offspring.

• A recessive trait will only be expressed if two recessive alleles are there

• Chance of inheriting an allele is not affected by inheriting another allele

Which word describes an organism that has two different alleles for a trait?

• homozygous

• dominant

• heterozygous

• recessive

B = a brown coat color for rabbits and b = white coat color. What is the genotype for the parents?

• Bb x bb

• BB x bb

• bb x bb

• BB x BB

DD, TT, EE, MM

• homozygous dominant

• homozygous recessive