Heredity

Front

Genotypes of offspring in box 1 and box 2 from a cross between a black and a white mouse (black fur is dominant).

Back

Box 1: Ff, Box 2: ff

Front

A cross between two brown eyed parents is shown above. Which statement BEST explains why blue eyes appear only in 25% of offspring?

Back

It is a recessive trait.

Front

In a cross between two pea plants, trait for yellow seed color appears when the expressed gene has one or both alleles for yellow color. Green color appears only when both alleles code for green color. What conclusion can be drawn from the statement?

Back

Yellow color is a dominant trait while green color is a recessive trait.

Front

The Punnett square shows a cross between a horse with a pure black (CC) coat and a horse with pure chestnut (cc) coat. What can be concluded about the trait of pure black coat in the offspring?

Back

It is a dominant trait.

Front

If the two parents represented in the Punnett square have four offspring, what does the Punnett square tell you?

Back

Each of the 4 offspring has a 50% chance of having genotype Aa.

Front

Two parents have the genotype Aa. Which statement best describes the possible genotypes of the offspring?

Back

On average 50 percent of their offspring will have the genotype Aa.

Front

In the cross between a brown haired rabbit (Bb) and a white haired rabbit (bb), what percentage of the offspring will exhibit the dominant trait and what percentage will exhibit the recessive trait (white fur)?

Back

50% dominant and 50% recessive

Front

What percentage of the offspring will have white grain color when two corn plants with purple grains (GG) are crossed?

Back

0%

Front

Two tall heterozygous pea plants are crossed. 56 tall plants and 14 short plants are produced from this cross. The allele for tallness is _________. Options: codominant, incomplete, recessive, dominant

Back

dominant

Front

A plant with red flowers crossed with a plant with white flowers produces offspring with pink flowers. What does this indicate about the gene for flower color?

Back

Neither gene for flower color is dominant.