Punnett Squares

Front

What is the definition of phenotype?

Back

The physical appearance of an organism based on traits.

Front

What does the letter 'T' represent in genetics?

Back

Tall (dominant trait).

Front

What does the letter 't' represent in genetics?

Back

Short (recessive trait).

Front

In a Punnett square, what does a capital letter signify?

Back

A dominant allele.

Front

In a Punnett square, what does a lowercase letter signify?

Back

A recessive allele.

Front

What is the probability of producing a short plant from a Tt x Tt cross?

Back

25%.

Front

If two brown-eyed parents (Bb) have a baby, what is the chance the baby is blue-eyed?

Back

25%.

Front

What is the purpose of a Punnett square?

Back

To predict the genotypes and phenotypes of offspring from genetic crosses.

Front

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

Back

Homozygous.

Front

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

Back

Heterozygous.