Genetics

Front

How many alleles does an offspring receive from each parent to determine a specific trait?

Back

One allele from each parent.

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

What does it mean to be homozygous?

Back

Having two of the same genes for a trait (purebred).

Front

In a Punnett Square, what is the phenotypic ratio when crossing two heterozygous plants (Tt x Tt) where tall (T) is dominant to short (t)?

Back

3:1.

Front

What is the chance of a blue-eyed baby if both parents are brown-eyed (Bb)?

Back

25% chance.

Front

What is the definition of a genotype?

Back

The genetic makeup of an organism, represented by alleles.

Front

What is the definition of a phenotype?

Back

The observable characteristics or traits of an organism.

Front

What is the difference between homozygous and heterozygous?

Back

Homozygous has two identical alleles; heterozygous has two different alleles.

Front

What is a Punnett Square used for?

Back

To predict the genotypes and phenotypes of offspring from genetic crosses.

Front

What does it mean if a trait is dominant?

Back

It is expressed in the phenotype even if only one allele is present.