Punnett Squares Flashcardizz

Front

What is a Punnett Square?

Back

A Punnett Square is a diagram used to predict the outcome of a genetic cross by showing the possible combinations of alleles from the parents.

Front

What does it mean for an allele to be dominant?

Back

A dominant allele is one that expresses its trait even when only one copy is present in the genotype.

Front

What does it mean for an allele to be recessive?

Back

A recessive allele is one that only expresses its trait when two copies are present in the genotype.

Front

In a Tt x Tt cross, what are the possible genotypes of the offspring?

Back

TT, Tt, Tt, tt.

Front

What is the probability of producing a tall plant from a Tt x Tt cross?

Back

75%.

Front

What is the probability of producing a short plant from a Tt x Tt cross?

Back

25%.

Front

If B = brown fur and b = white fur, what is the genotype for a brown-furred offspring?

Back

BB or Bb.

Front

What is the phenotype of an offspring with genotype Bb?

Back

Brown fur.

Front

In a cross of Aa x Aa, what are the possible genotypes of the offspring?

Back

AA, Aa, Aa, aa.

Front

What is the probability of producing an offspring with blonde hair if A = brown hair and a = blonde hair in an Aa x Aa cross?

Back

25%.