Punnett Square

Front

What percent of offspring will have the recessive trait?

Back

25%

Front

Two brown eyed parents (Bb) have a baby. What is the chance the baby is blue eyed (bb)?

Back

25%

Front

Purple flowers describes:

Back

phenotype

Front

Which of the following represents alleles for the homozygous recessive genotype? (Aa, aa, AA)

Back

aa

Front

What is a phenotype?

Back

The physical trait.

Front

What is a genotype?

Back

The genetic make up (code).

Front

What does a Punnett Square show?

Back

The possible genetic combinations of offspring from two parents.

Front

If a plant has the genotype Bb, what are the possible alleles it can pass on?

Back

B or b.

Front

What is the difference between dominant and recessive traits?

Back

Dominant traits are expressed when at least one dominant allele is present; recessive traits are expressed only when two recessive alleles are present.

Front

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

Back

The alleles contributed by each parent.