Punnett 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 the dominant allele for tall plants, while t represents the recessive allele for short plants.

Front

In a Punnett Square, what does a genotype of 'tt' indicate?

Back

The genotype 'tt' indicates a homozygous recessive condition, resulting in a short phenotype.

Front

What is the probability of obtaining a homozygous dominant genotype (TT) from two heterozygous parents (Tt)?

Back

The probability is 25%.

Front

What does the term 'phenotype' refer to?

Back

Phenotype refers to the observable physical characteristics of an organism, determined by its genotype.

Front

What is the probability of a child having brown fur if one parent is homozygous dominant (BB) and the other is homozygous recessive (bb)?

Back

The probability is 100%.

Front

What does a heterozygous genotype consist of?

Back

A heterozygous genotype consists of two different alleles for a trait, such as Tt.

Front

What is the significance of the dominant allele in a heterozygous genotype?

Back

The dominant allele masks the effect of the recessive allele in the phenotype.

Front

If a plant has the genotype 'Gg', what color will it be?

Back

It will be green, as G (green) is dominant over g (yellow).

Front

What is the expected phenotypic ratio of a monohybrid cross between two heterozygous parents (Tt)?

Back

The expected phenotypic ratio is 3:1 (3 tall : 1 short).