Punnett Squares

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

• The physical expression of a gene. (Characteristics)

• A strand of DNA made up of multiple mutations.

• The expression of one of your parents traits.

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

Which of the following genotypes is homozygous (same) dominant?

• A

• Aa

• AA

• aa

Which of the following genotypes is heterozygous (different)?

• 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 heterozygous gene is

• FF

• ff

• Ff

An example of a homozygous recessive gene is

• Dd

• DD

• dd

• DAB

An example of a homozygous dominant 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

Alternative forms of a gene are called

• Alleles
• Homozygous
• DNA
• Genetics