Genetics and Punnett Squares

Front

What does a Punnett Square determine?

Back

All the outcomes of a genetic cross.

Front

What is a physical characteristic that can be passed from parent to offspring?

Back

Trait.

Front

What is the term for the observable characteristics of an organism?

Back

Phenotype.

Front

What is the term for the genetic makeup of an organism?

Back

Genotype.

Front

If a homozygous black guinea pig (BB) is crossed with a homozygous white guinea pig (bb), what is the probability that an offspring will have black fur?

Back

100%.

Front

What does DNA stand for?

Back

Deoxyribonucleic acid.

Front

What is the difference between dominant and recessive alleles?

Back

Dominant alleles express their trait even if only one copy is present, while recessive alleles require two copies to express their trait.

Front

What is a genotype?

Back

The genetic constitution of an individual, represented by letters (e.g., BB, Bb, bb).

Front

What is a phenotype?

Back

The physical expression or characteristics of a trait in an organism.

Front

What is the purpose of a Punnett Square?

Back

To predict the genetic outcomes of a cross between two organisms.