Monohybrid Crosses

Front

What is a monohybrid cross?

Back

A genetic cross between individuals that involves one pair of contrasting traits.

Front

What does the term 'allele' mean?

Back

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

Front

What is the difference between genotype and phenotype?

Back

Genotype refers to the genetic makeup of an organism, while phenotype refers to the observable traits.

Front

What does homozygous mean?

Back

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

Front

What does heterozygous mean?

Back

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

Front

What is a dominant allele?

Back

A dominant allele is one that expresses its trait even when only one copy is present (e.g., B in Bb).

Front

What is a recessive allele?

Back

A recessive allele is one that only expresses its trait when two copies are present (e.g., bb).

Front

What is a Punnett square?

Back

A Punnett square is a diagram used to predict the outcome of a genetic cross.

Front

What is the purpose of a test cross?

Back

A test cross is used to determine the genotype of an individual with a dominant phenotype.

Front

What is the expected phenotypic ratio in a monohybrid cross?

Back

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