Punnett Square Genetics

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 does the term 'allele' mean?

Back

An allele is a variant form of a gene that can produce different traits.

Front

What does 'homozygous' mean?

Back

Homozygous refers to having two identical alleles for a particular gene (e.g., AA or aa).

Front

What does 'heterozygous' mean?

Back

Heterozygous refers to having two different alleles for a particular gene (e.g., Aa).

Front

What is complete dominance?

Back

Complete dominance occurs when one allele completely masks the effect of another allele in a heterozygous genotype.

Front

What is incomplete dominance?

Back

Incomplete dominance is a genetic situation in which one allele does not completely dominate another allele, resulting in a new phenotype.

Front

What is codominance?

Back

Codominance is a genetic scenario where both alleles in a heterozygous genotype are fully expressed, resulting in offspring with a phenotype that is neither dominant nor recessive.

Front

What phenotype does the genotype 'Aa' represent if 'A' is red fur and 'a' is white fur?

Back

The phenotype represented by 'Aa' is red fur due to complete dominance.

Front

What phenotype does the genotype 'TT' represent?

Back

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

Front

What phenotype does the genotype 'aa' represent?

Back

The phenotype represented by 'aa' is white fur, as 'a' is the recessive allele.