Punnett Squares

Front

What is a Punnett square used for?

Back

A Punnett square is used to predict the probability of certain traits being passed from parents to offspring.

Front

What does it mean for an organism to be homozygous?

Back

An organism is homozygous when it has two identical alleles for a particular gene.

Front

What does it mean for an organism to be heterozygous?

Back

An organism is heterozygous when it has two different alleles for a particular gene.

Front

How do offspring inherit traits from their parents?

Back

Offspring inherit traits through the combination of alleles from both parents.

Front

What is the significance of dominant and recessive alleles in inheritance?

Back

Dominant alleles can mask the effect of recessive alleles in determining an organism's traits.

Front

If a parent has genotype Bb, what are the possible alleles they can pass to their offspring?

Back

The parent can pass either the B (dominant) or b (recessive) allele.

Front

What is the expected phenotypic ratio in a monohybrid cross of two heterozygous parents?

Back

The expected phenotypic ratio is 3:1 for dominant to recessive traits.

Front

What is the expected genotypic ratio in a monohybrid cross of two heterozygous parents?

Back

The expected genotypic ratio is 1:2:1 for homozygous dominant, heterozygous, and homozygous recessive.

Front

What does the term 'allele' refer to?

Back

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

Front

What is the role of a test cross in genetics?

Back

A test cross is used to determine the genotype of an organism with a dominant phenotype by crossing it with a homozygous recessive.