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Which of these Punnett squares represents a cross between a homozygous dominant parent and a heterozygous parent?
In a certain breed of cats, having black hair is the result of two dominant alleles for hair color (HH). The heterozygous genotype (Hh) produces a cat that has black and white spots. Having two recessive (hh) 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 (HH). The heterozygous genotype (Hh) produces a cat that has black and white spots. Having two recessive (hh) 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 spotted fur?
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%
When one allele is not dominant over another, resulting in a blended phenotype for heterozygous offspring is considered....
Incomplete Dominance
Codominance
When one allele is not dominant over the other, resulting in both traits expressed in a heterozygous individual.....
Incomplete Dominance
Codominance
The image above shows the incomplete dominant cross where D codes for straight hair in dogs and d codes for curly hair in dogs. The incomplete dominant trait is wavy hair. Which of the following statements is true about the offspring?
Only the heterozygous genotype can code for wavy hair.
Only the homozygous dominant genotype can code for wavy hair.
Only the homozygous recessive genotype can code for wavy hair.
The homozygous recessive and homozygous dominant genotypes can code for wavy hair.
Brown is dominant to green. What is the probability of these parents having green offspring?
1/4
2/4
3/4
4/4
Which of the following correctly states the genotype probabilities for the offspring of the parents shown in this punnett square?
50% heterozygous 50% homozygous dominant
50% heterozygous 50% homozygous recessive
50% heterozygous 25% homozygous recessive 25% homozygous dominant
100% heterozygous
In plants, tall (T) is dominant to short (t).
Draw a punnett square and perform the following cross: Tt x Tt
What is the probability of producing a short plant?
0%
25%
50%
75%
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