Genotype, Phenotype, & Punnett Squares

Front

Genotype refers to...

Back

the possible combination of alleles in a gene.

Front

If red petals are dominant in flowers, what would a homozygous dominant flower's genotype look like?

Back

RR

Front

What you see, or the physical appearance.

Back

Phenotype

Front

What is the probability that the offspring would have a homozygous genotype?

Back

50%.

Front

B = brown fur & b = white fur. If two heterozygous parents reproduce, what is the probability that the offspring will have white fur?

Back

25%.

Front

What is a Punnett Square?

Back

A diagram used to predict the outcome of a genetic cross.

Front

What does homozygous mean?

Back

Having two identical alleles for a trait.

Front

What does heterozygous mean?

Back

Having two different alleles for a trait.

Front

What is the difference between dominant and recessive alleles?

Back

Dominant alleles express their trait even if only one copy is present; recessive alleles require two copies to express their trait.

Front

If a plant has the genotype Rr, what is its phenotype if R is dominant?

Back

The phenotype will be the dominant trait.