Heredity and Punnett Squares

Front

What is the genotype of an individual with one dominant and one recessive allele for a trait?

Back

Bb

Front

What is the probability of a child having blue eyes if both parents are heterozygous for brown eyes (Bb)?

Back

25%

Front

In a Punnett square, what genotype results from crossing Tt (tall) and tt (short)?

Back

tt

Front

What is the phenotype of an individual with genotype Bb for hair color, where B is brown and b is blonde?

Back

Brown Hair

Front

What molecule carries genetic information in living organisms?

Back

DNA

Front

What is the definition of a dominant allele?

Back

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

Front

What is the definition of a recessive allele?

Back

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

Front

What does a Punnett square illustrate?

Back

The possible genetic combinations from a cross between two parents.

Front

If a homozygous dominant individual (BB) is crossed with a homozygous recessive individual (bb), what will be the genotype of the offspring?

Back

All Bb

Front

What is the expected phenotypic ratio of a monohybrid cross between two heterozygous parents (Bb x Bb)?

Back

3:1