Punnett Squares

Front

What is a Punnett Square?

Back

A Punnett Square is a diagram used to predict the genetic makeup of offspring from two parents based on their genotypes.

Front

What does homozygous dominant mean?

Back

Homozygous dominant refers to having two identical dominant alleles for a trait, represented as 'AA'.

Front

What does homozygous recessive mean?

Back

Homozygous recessive refers to having two identical recessive alleles for a trait, represented as 'aa'.

Front

What does heterozygous mean?

Back

Heterozygous refers to having two different alleles for a trait, represented as 'Aa'.

Front

What is the genotype for a yellow plant if G = green and g = yellow?

Back

The genotype for a yellow plant is 'gg'.

Front

In a Punnett Square, what does each box represent?

Back

Each box represents a 25% probability of an offspring's genotype.

Front

What is the phenotype of a plant with genotype 'TT'?

Back

The phenotype is tall, as 'T' is the dominant allele for height.

Front

What is the phenotype of a plant with genotype 'Tt'?

Back

The phenotype is tall, as 'T' is the dominant allele for height.

Front

What is the phenotype of a plant with genotype 'tt'?

Back

The phenotype is short, as 't' is the recessive allele for height.

Front

If a plant is heterozygous for a trait, what are the possible gametes it can produce?

Back

The possible gametes are 'T' and 't'.