Monohybrid VOCAB

Front

What is a phenotype?

Back

The physical trait of an organism.

Front

What is a genotype?

Back

The genetic makeup (code) of an organism.

Front

If green is dominant over purple, what is the genotype for a purple individual?

Back

gg

Front

What is the genotypic ratio in a monohybrid cross?

Back

1:2:1

Front

What is the phenotypic ratio in a monohybrid cross?

Back

3:1

Front

What is a heterozygous genotype?

Back

A genotype with two different alleles, e.g., Rr.

Front

What is a homozygous genotype?

Back

A genotype with two identical alleles, e.g., RR or rr.

Front

What does dominant mean in genetics?

Back

An allele that expresses its trait even in the presence of a recessive allele.

Front

What does recessive mean in genetics?

Back

An allele that only expresses its trait when two copies are present.

Front

What is a Punnett square?

Back

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