Punnett Squares

Front

What do dominant alleles represent in genetics?

Back

Dominant alleles are represented by a capital letter.

Front

In a heterozygous genotype, which allele is expressed in the phenotype?

Back

The dominant allele is expressed in the phenotype.

Front

What is the term for the physical appearance of an organism?

Back

Phenotype.

Front

What is the genotype of an organism with two different alleles?

Back

Heterozygous.

Front

What is the genotype of an organism with two identical alleles?

Back

Homozygous.

Front

What does the term 'recessive allele' mean?

Back

A recessive allele is only expressed in the phenotype if two copies are present.

Front

What is a Punnett Square used for?

Back

A Punnett Square is used to predict the genetic outcomes of a cross between two organisms.

Front

If 'A' is a dominant allele and 'a' is a recessive allele, what is the phenotype of 'Aa'?

Back

The phenotype will show the dominant trait.

Front

What does the term 'genotype' refer to?

Back

Genotype refers to the genetic makeup of an organism.

Front

In a Punnett Square, what do the letters on the top and side represent?

Back

The letters represent the alleles contributed by each parent.