Genetics and Punnett Squares

Front

What are the different forms of genes called?

Back

Alleles

Front

What is a phenotype?

Back

The physical trait of an organism.

Front

Are recessive traits represented by capital or lowercase letters?

Back

Lowercase letters.

Front

What does phenotype refer to?

Back

The expression of a trait; physical appearance.

Front

Which of the following is an example of a phenotype? Aa, red hair, heterozygous, DNA?

Back

Red hair.

Front

What is a genotype?

Back

The genetic makeup of an organism.

Front

What is the purpose of a Punnett square?

Back

To predict the probability of offspring inheriting certain traits.

Front

What does homozygous mean?

Back

An organism with two identical alleles for a trait (e.g., TT or tt).

Front

What does heterozygous mean?

Back

An organism with two different alleles for a trait (e.g., Tt).

Front

What is a dominant trait?

Back

A trait that is expressed when at least one dominant allele is present.