Monohybrid and Dihybrid Crosses

Front

What term describes the genotypes Tt, Mm, and Gg?

Back

heterozygous

Front

In a monohybrid cross, which eye color is typically dominant if brown and blue are the options?

Back

brown

Front

What is the genotype that is homozygous dominant?

Back

RR

Front

What principle states that an organism can only pass one allele for a trait to its offspring?

Back

Law of Segregation

Front

What is the percent chance of having a child with blue eyes if the monohybrid Punnett square shows a 1:3 ratio for blue to brown?

Back

25%

Front

What is a monohybrid cross?

Back

A genetic cross between parents that differ in a single trait.

Front

What is a dihybrid cross?

Back

A genetic cross between parents that differ in two traits.

Front

What does homozygous mean?

Back

Having two identical alleles for a particular gene.

Front

What does heterozygous mean?

Back

Having two different alleles for a particular gene.

Front

What is the expected phenotypic ratio in a monohybrid cross?

Back

3:1 ratio of dominant to recessive phenotypes.