Genetics

Front

What is the genotype of a rabbit with brown fur?

Back

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Front

What is the reason there are no white rabbit babies?

Back

It takes two recessive genes to show the trait.

Front

What type of parents are represented in a Punnett square showing a cross between two homozygous parents?

Back

Two homozygous parents

Front

What is a phenotype?

Back

A phenotype is the observable physical characteristic of an organism, such as blue eyes.

Front

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

Back

50%.

Front

Define dominant allele.

Back

A dominant allele is an allele that expresses its trait even in the presence of a recessive allele.

Front

Define recessive allele.

Back

A recessive allele is an allele that only expresses its trait when two copies are present.

Front

What is a homozygous genotype?

Back

A homozygous genotype has two identical alleles for a trait, either dominant or recessive.

Front

What is a heterozygous genotype?

Back

A heterozygous genotype has two different alleles for a trait, one dominant and one recessive.

Front

What does a Punnett square illustrate?

Back

A Punnett square illustrates the possible genetic combinations from a cross between two parents.