Heredity 10 Q

What is a phenotype?

• The genetic make up (code)

• The physical trait

Which of the following genotypes is homozygous dominant?

• A

• Aa

• aa

• AA

Which of the following is the correct definition for a genotype?

• The set of genes in our DNA which is responsible for a particular trait.

• The expression of one of your parents traits.

• A strand of DNA made up of multiple mutations.

• The physical expression of a gene. (Characteristics)

Which of the following genotypes is heterozygous?

• bb

• BB

• Bb

• B

In a heterozygous genotype, the ___________ allele takes over in the phenotype.

• recessive

• dominant

• lower case letter

• both 

An example of a homozygous recessive gene is

• dd

• Dd

• DD

• DAB

Dominant alleles are represented by a:

• Male gene

• lowercase letter

• recessive trait

• capital letter

Aa, DD, bB, yy are all examples of

• genotypes

• phenotypes

Hair colour is an example of

• phenotype

• genotype

Mark is heterozygous. If B is for brown hair, and b is for blonde hair, what is Mark's genotype?

• B

• BB

• Bb

• bb