Heredity and Genetics Practice Assessment

Front

The study of ____________ is called genetics.

Back

heredity

Front

If you cross two rabbits that have the genotype Bb, how many possible genotypes can be found in the offspring?

Back

three

Front

The letters representing the expression of the trait is called

Back

genotype

Front

A heterozygous long-tusked elephant is crossed with a homozygous recessive short-tusked elephant. What is the probability of the offspring having short tusks?

Back

50%

Front

A genotype with two of the same alleles of the gene for a certain trait is called

Back

homozygous

Front

What is the term for the physical expression of a trait?

Back

phenotype

Front

What is the difference between a dominant and a recessive allele?

Back

A dominant allele masks the effect of a recessive allele in a heterozygous genotype.

Front

What is a Punnett square used for?

Back

To predict the genotypes and phenotypes of offspring from a genetic cross.

Front

What does it mean if an organism is heterozygous for a trait?

Back

It has two different alleles for that trait.

Front

What is the probability of obtaining a homozygous recessive offspring from a cross between two heterozygous parents?

Back

25%