Monohybrid & Dihybrid Practice

Front

What is a heterozygous genotype?

Back

A genotype where an organism has different genes for a trait (e.g., Tt).

Front

What is a homozygous genotype?

Back

A genotype where an organism has the same genes for a trait (e.g., TT or tt).

Front

What does phenotype mean?

Back

An organism’s physical appearance or visible traits.

Front

What does genotype mean?

Back

An organism’s genetic makeup or allele combination.

Front

If red color is dominant in flowers, what would a heterozygous flower's genotype look like?

Back

Rr

Front

Which of the following would be heterozygous recessive?

Back

Not possible to be heterozygous and recessive.

Front

What is the definition of dominant trait?

Back

A trait that is expressed in the phenotype even when only one copy of the allele is present.

Front

What is the definition of recessive trait?

Back

A trait that is only expressed in the phenotype when two copies of the allele are present.

Front

What is a Punnett square?

Back

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

Front

What is the purpose of a test cross?

Back

To determine the genotype of an organism with a dominant phenotype.