Concept explainers
In tigers, a recessive allele that is pleiotropic causes an absence of fur pigmentation (a white tiger) and a cross-eyed condition. If two
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Campbell Biology in Focus, Books a la Carte Edition; Modified Mastering Biology with Pearson eText - ValuePack Access Card - for Campbell Biology in Focus (2nd Edition)
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Biology: Concepts and Investigations
- In humans, the alleles for unattached earlobes is dominant over the allele for attached earlobes. The allele for dark hair dominates the allele for light hair. If both parents are heterozygous for earlobe attachment and hair color, what types of offspring can they produce, and what is the probability for each type?arrow_forwardIn a population of North American rabbits, brown fur color is dominant to white fur color. If two heterozygote rabbits mate, what is the chance of having a white furred bunny?arrow_forwardIn dogs, the color black is dependent upon the dominant allele B and white upon the recessive allele b. If two heterozygous black dogs mate, what genotypes and phenotypes may show up in the F1 generation?arrow_forward
- In dogs, the color black is dependent upon the dominant allele B and white upon the recessive allele b. If two heterozygous black dogs mate, what genotypes and phenotypes may show up in the F1 generation? QUESTION: What percent of the offspring would you expect to have: A black phenotype and a white phenotype?arrow_forwardIf black and white true-breeding mice are mated and the result is all gray offspring, what inheritance pattern would this be indicative of?arrow_forwardIn dogs, black fur color is dominant to white. Two heterozygousblack dogs are mated. What is the probability of the followingcombinations of offspring?A. A litter of six pups, four with black fur and two with white fur.B. A first litter of six pups, four with black fur and two with whitefur, and then a second litter of seven pups, five with black furand two with white fur.arrow_forward
- In humans, brown eyes (B) are dominant over blue. A brown eyed man marries a blue-eyed (b) woman and they have three children two of whom are brown-eyed and one of whom is blue-eyed. if blue is recessive, what must the woman’s genotype be?arrow_forwardThe allele A is brown fur and the allele a is white fur. In a mating between a heterozygous male and a heterozygous female, what is probability that they will have an offspring with brown fur and what is the probability they will have an offspring with white fur?arrow_forwardA cross between an orange-brown male and a homozygous black female produce four kittens. What is the phenotypic probability of the offspring? probability of the offspring?arrow_forward
- In four-o'-clock plants, the allele for red flowers is incompletely dominant to the allele for white flowers, so heterozygotes have pink flowers. What ratios of flower colors would you expect among the offspring of white flower plants X pink flower plants.arrow_forwardIn rabbits, black hair is dependent on a dominant allele B, and brown upon arecessive allele b. Short-hair is due to dominant allele S and long hair to arecessive allele s. If a true-breeding black short haired male is mated with abrown, long-haired female, what will their offspring look like? What will be the genotypes of the offspring?arrow_forwardHypothetically the yellow color of a lovebird is a dominant allele (Y). The male lovebird is orange, the mother lovebird is yellow, and their first offspring is orange. What is the probability that the first offspring will be orange again?arrow_forward
- Concepts of BiologyBiologyISBN:9781938168116Author:Samantha Fowler, Rebecca Roush, James WisePublisher:OpenStax College