Mendelian Genetics Quiz

Which term describes an organism's genetic makeup?

• allele

• chromosome

• phenotype

• genotype

What is the term for an physical trait or characteristic of an organism?

• phenotype

• genotype

• allele

• chromosome

Choose all of the genotypes.

• Blue eyes

• Bb

• bb

• Brown Hair

• AA

Choose all of the phenotypes.

• Blue eyes

• Bb

• bb

• Brown Hair

• AA

Which genotype is homozygous dominant?

• Hh

• HH

• hh

Which genotype is homozygous recessive?

• Hh

• HH

• hh

Which genotype is heterozygous?

• HH

• Hh

• hh

The dominant allele (T) codes long whiskers & the recessive allele (t) codes for short whiskers. What percentage of offspring would be expected to have short whiskers from the cross of two long-whiskered seals, one that is homozygous dominant and one that is heterozygous?

• 0%

• 50%

• 75%

• 100%

• 25%

In purple people eaters, one-horn (H) is dominant and no horns (h) is recessive. What are the genotypes for the children if one parent is a purple people eater that is hybrid for horns and the other parent is a purple people eater that does not have horns?

• HH

• Hh

• hh

In humans brown eyes are dominant over blue eyes. Two heterozygous brown eyed people have children. What is the chance that their child could have brown eyes?

• 0%

• 25%

• 50%

• 75%

• 100%