Genetics

Front

What is a phenotype?

Back

The physical trait of an organism.

Front

What is the genotype for an individual with a homozygous recessive trait if green is dominant over purple?

Back

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Front

What does it mean to be homozygous?

Back

Having two of the same genes for a trait (sometimes called purebred).

Front

What is incomplete dominance?

Back

A genetic situation in which one allele does not completely dominate another allele, resulting in a blended phenotype.

Front

What are recessive alleles represented by?

Back

Lowercase letters.

Front

What is a genotype?

Back

The genetic makeup of an organism, represented by the alleles it possesses.

Front

What is the difference between dominant and recessive alleles?

Back

Dominant alleles express their traits even when only one copy is present, while recessive alleles only express their traits when two copies are present.

Front

What is a heterozygous genotype?

Back

Having two different alleles for a trait.

Front

What is the law of segregation?

Back

The principle that during the formation of gametes, the two alleles for a trait separate from each other.

Front

What is a Punnett square used for?

Back

To predict the genotypes and phenotypes of offspring from a genetic cross.