Basic Genetics Review

Front

What is the chance that a baby from two brown-eyed parents (Bb) will have brown eyes?

Back

75%

Front

What is the predicted percentage of homozygous recessive offspring in a cross between two heterozygous parents (Bb x Bb)?

Back

50%

Front

What is the term for the hidden trait that requires two alleles to be expressed?

Back

Recessive

Front

What do the letters representing a trait's genetic makeup refer to?

Back

Genotype

Front

What are the different forms of a trait called?

Back

Alleles

Front

What is the observable expression of a trait called?

Back

Phenotype

Front

What is the genetic makeup of an organism?

Back

Genotype

Front

What is the term for a trait that is expressed even if only one allele is present?

Back

Dominant

Front

What is the difference between homozygous and heterozygous?

Back

Homozygous has two identical alleles; heterozygous has two different alleles.

Front

What is the expected phenotypic ratio in a monohybrid cross?

Back

3:1