Heredity

Front

What is the combination of alleles in an organism called?

Back

Genotype

Front

What is the observable physical characteristic of an organism?

Back

Phenotype

Front

What is the term for the genetic makeup of an organism?

Back

Genotype

Front

In genetics, what does the term 'dominant' refer to?

Back

An allele that expresses its trait even in the presence of a recessive allele.

Front

What does 'recessive' mean in genetics?

Back

An allele that only expresses its trait when two copies are present.

Front

If a dominant allele is represented by 'A' and a recessive allele by 'a', what is the genotype of a homozygous dominant organism?

Back

AA

Front

What is a Punnett square used for?

Back

To predict the genetic outcomes of a cross between two organisms.

Front

If a WW horse is crossed with a ww horse, what percentage of offspring will have white hair?

Back

100%.

Front

In pea plants, round seeds (R) are dominant to wrinkled seeds (r). What is the genotype of a plant with round seeds that is heterozygous?

Back

Rr

Front

What is the expected percentage of round seeds from a cross between two heterozygous pea plants (Rr x Rr)?

Back

75%.