Punnet squares

Front

What is a Punnett square?

Back

A Punnett square is a diagram used to predict the outcome of a genetic cross by showing the possible combinations of alleles from the parents.

Front

What do the letters T and t represent in genetics?

Back

T represents a dominant allele (tall), and t represents a recessive allele (short).

Front

What is a dominant allele?

Back

A dominant allele is an allele that expresses its trait even when only one copy is present.

Front

What is a recessive allele?

Back

A recessive allele is an allele that only expresses its trait when two copies are present.

Front

How are dominant alleles represented in genetics?

Back

Dominant alleles are represented by capital letters.

Front

How are recessive alleles represented in genetics?

Back

Recessive alleles are represented by lowercase letters.

Front

What does homozygous mean?

Back

Homozygous means having two identical alleles for a particular gene.

Front

What does heterozygous mean?

Back

Heterozygous means having two different alleles for a particular gene.

Front

What is the probability of getting homozygous dominant offspring from two heterozygous parents (Tt x Tt)?

Back

The probability is 25%.

Front

Which genotype is homozygous dominant?

Back

AA is homozygous dominant.