Punnett Squares Quiz Review

If one parent has the genotype "Bb" and the other parent has the genotype "bb", what is the chance their offspring will have a recessive phenotype?

• 25%

• 50%

• 75%

• 100%

• 0%

In some plants, red flowers are dominant (R) and white flowers are recessive (r). This trait follows the complete dominance pattern of inheritance. Two plants are crossed and they produce 610 red flowers and 205 white flowers. Which Punnett square most likely shows this cross and its offspring?

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In a certain breed of cats, having black hair is the result of two dominant alleles for hair color. The heterozygous genotype produces a cat that has black and white spots. Having two recessive genes results in a white-haired cat. In the Punnett square below, what are the phenotypes of the parent cats?

• 2 spotted cats

• 2 black cats

• 1 spotted cat and 1 white cat

• 1 black cat and 1 spotted cat

In a certain breed of cats, having black hair is the result of two dominant alleles for hair color. The heterozygous genotype produces a cat that has black and white spots. Having two recessive genes results in a white-haired cat. What is the chance that the parent cats in the Punnett square below will have an offspring with black fur?

• 0%

• 25%

• 50%

• 75%

• 100%

Human blood types are determined by the types of proteins, A or B, found in the blood. People with type O blood have neither A nor B proteins present. The table below provides a description of the possible blood type combinations. What is the probability that a heterozygous mother with type A blood and a heterozygous father with type B blood will have a child with type O blood?

• 0%

• 25%

• 50%

• 75%

• 100%

In humans, the ability to roll one's tongue follows the complete dominance pattern of inheritance. The allele for tongue-rolling is dominant to the allele for non-tongue-rolling. If two heterozygous parents that can roll their tongues produce an offspring, what is the probability that their child will also be able to roll its tongue?

• 0%

• 25%

• 50%

• 75%

• 100%

In flowers, color is determined using incomplete dominance. Red flowers are dominant and blue flowers are recessive. What is the chances of 2 heterozygous purple flowers producing a red flower?

• 0%

• 25%

• 50%

• 75%

• 100%

Fruit flies can either have a brown body or a black body. The allele for a brown body is completely dominant over the allele for a black body. A brown fruit fly was crossed with a black fruit fly as shown. What is the probability of a resulting offspring having a black body?

• 0%

• 25%

• 50%

• 75%

• 100%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

In pea plants, the allele for tallness (T) is dominant and the allele for shortness (t) is recessive. This trait is determined using complete dominance. In the cross between a pea plant with the genotype "tt" and another pea plant with the genotype "Tt", what is the probability that the resulting offspring will be tall?

• 0%

• 25%

• 50%

• 75%

• 100%

In a particular type of cat, coat color follows the complete dominance pattern of inheritance. The allele for a brown coat (B) is dominant over the allele for a white coat (b). A cross between two white-coated cats could result in:

• only white kittens

• either white or brown kittens

• only brown kittens

• white kittens with brown spots