Genetics

Front

What is an allele whose trait only shows up when no dominant allele is present?

Back

Recessive allele

Front

What does genotype refer to?

Back

The possible combination of alleles in a gene.

Front

If G = green and g = yellow, what is the genotype for a yellow plant?

Back

gg

Front

What are the percentages of the possible genotypes when a homozygous dominant dog with brown fur is crossed with a heterozygous dog with brown fur?

Back

50% BB and 50% Bb

Front

Which genotype belongs in the red box in the Punnett square: X^BX^b, X^bX^b, X^bY, X^BY?

Back

X^BY

Front

Define dominant allele.

Back

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

Front

What is the phenotype of an organism?

Back

The physical expression of the genes.

Front

What is a homozygous genotype?

Back

A genotype consisting of two identical alleles for a particular gene.

Front

What is a heterozygous genotype?

Back

A genotype consisting of two different alleles for a particular gene.

Front

What is a Punnett square used for?

Back

To predict the genotypes of offspring from a genetic cross.