Genetics Review

Front

Heterozygous is when...

Back

the alleles are different.

Front

In a genetic cross, what does a capital letter represent?

Back

A dominant allele.

Front

In a Punnett square, a lower case letter stands for a ____________ allele.

Back

recessive.

Front

An offspring will receive how many alleles from each parent to determine a specific trait?

Back

one.

Front

In rabbits, black fur (B) is dominant over brown fur (b). If a rabbit has brown fur, what can you conclude about its genotype?

Back

It is bb.

Front

What is the definition of a genotype?

Back

The genetic makeup of an organism.

Front

What is the definition of a phenotype?

Back

The physical expression of a genotype.

Front

What does homozygous mean?

Back

Having two identical alleles for a trait.

Front

What does recessive mean in genetics?

Back

An allele that is masked by a dominant allele.

Front

What is a Punnett square used for?

Back

To predict the genotypes of offspring from a genetic cross.