genetics terminology

Front

What is the probability that the offspring would have homozygous alleles for a trait if both parents are heterozygous?

Back

50%

Front

What do we call parents that have two identical alleles for a trait?

Back

Homozygous

Front

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

Back

Phenotype

Front

Which pair of alleles represents a homozygous recessive genotype?

Back

bb

Front

What is it called when both alleles in a genotype are different?

Back

Heterozygous

Front

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

Back

Genotype

Front

If a trait is dominant, what is the minimum genotype required for it to be expressed?

Back

At least one dominant allele (e.g., Bb or BB)

Front

What is the term for an allele that is masked by a dominant allele?

Back

Recessive

Front

In a Punnett square, what does each box represent?

Back

The possible genotypes of the offspring.

Front

What is the expected phenotype ratio for a monohybrid cross between two heterozygous parents?

Back

3:1 (dominant:recessive)