Genetics

Front

What is a recessive allele?

Back

An allele whose trait only shows up when no dominant allele is present.

Front

What is the probability of a blue-eyed baby from two brown-eyed parents (Bb)?

Back

25%.

Front

What does heterozygous mean?

Back

Having two different genes for a trait (sometimes called hybrid).

Front

What are the possible genotypes when a homozygous dominant dog (BB) is crossed with a heterozygous dog (Bb)?

Back

50% BB and 50% Bb.

Front

Which genotype is homozygous dominant?

Back

BB.

Front

What is a dominant allele?

Back

An allele whose trait always shows up when present.

Front

Define genotype.

Back

The genetic makeup of an organism, represented by the alleles it possesses.

Front

What is the difference between homozygous and heterozygous?

Back

Homozygous means having two identical alleles for a trait, while heterozygous means having two different alleles.

Front

What is a Punnett square?

Back

A diagram used to predict the outcome of a genetic cross by showing the possible combinations of alleles.

Front

What does phenotype refer to?

Back

The observable physical or biochemical characteristics of an organism, determined by its genotype.