Genetics Practice

Front

What is a genotype?

Back

The genetic makeup of an organism, represented by letters (e.g., BB, Bb, bb).

Front

What does 'B' represent in genetics?

Back

Brown fur; it is a dominant allele.

Front

What does 'b' represent in genetics?

Back

White fur; it is a recessive allele.

Front

What is a Punnett square used for?

Back

To predict the genetic outcomes of a cross between two organisms.

Front

What do the letters on the outside of the Punnett square represent?

Back

The alleles contributed by the parents.

Front

What do the letters on the inside of the Punnett square represent?

Back

The possible genotypes of the offspring.

Front

What is an allele?

Back

A version of a gene; one letter that represents a trait.

Front

What is the probability of getting a recessive trait in a Punnett square?

Back

It depends on the genotypes of the parents.

Front

What is the phenotypic ratio in a monohybrid cross?

Back

The ratio of different physical traits expressed in the offspring.

Front

What is the difference between dominant and recessive alleles?

Back

Dominant alleles mask the effect of recessive alleles in heterozygous conditions.