If Brie were to (one day) marry a man who was heterozygous for the tongue-rolling trait, what percentage of their children would be able to roll their tongues? а. 0% b. 25% с. 50% d. 75% e. 100% QUESTION 69 Please read the scenario below; then, answer the question (in bold) that follows. In humans, the ability to roll one's tongue is a dominant trait (R). A woman who can roll her tongue is married to a man who cannot roll his tongue. The couple's daughter, Brie, can roll her tongue, but their son, Michael, cannot. Imagine, for a moment, that the mother and father separate, and the mother decides to remarry. If her second husband is homozygous dominant for the tongue-rolling gene, what is the likelihood that their children (if they choose to have any) will be able to roll their tongues? O a. 0% b. 25% c. 50% d. 75% е. 100%

If Brie were to (one day) marry a man who was heterozygous for the tongue-rolling trait, what percentage of their children would be able to roll their tongues? а. 0% b. 25% с. 50% d. 75% e. 100% QUESTION 69 Please read the scenario below; then, answer the question (in bold) that follows. In humans, the ability to roll one's tongue is a dominant trait (R). A woman who can roll her tongue is married to a man who cannot roll his tongue. The couple's daughter, Brie, can roll her tongue, but their son, Michael, cannot. Imagine, for a moment, that the mother and father separate, and the mother decides to remarry. If her second husband is homozygous dominant for the tongue-rolling gene, what is the likelihood that their children (if they choose to have any) will be able to roll their tongues? O a. 0% b. 25% c. 50% d. 75% е. 100%

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Description: If Brie were to (one day) marry a man who was heterozygous for the tongue-rolling trait, whatpercentage of their children would be able to roll their tongues?а. 0%b. 25%c. 50%d. 75%е. 100%QUESTION 69Please read the scenario below; then, answer the q

Human Biology (MindTap Course List)

11th Edition

ISBN:9781305112100

Author:Cecie Starr, Beverly McMillan

Publisher:Cecie Starr, Beverly McMillan

Chapter19: Introduction To Genetics

Section: Chapter Questions

Problem 5CT: When you decide to breed your Labrador retriever Molly and sell the puppies, you discover that two...

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In a trait that follows Mendelian rules of inheritance, what is the only way an organism can have the recessive phenotype? A. By having the homozygous recessive genotype B. By being heterozygous for that genotype C. It is not possible to get the recessive phenotype in Mendelian genetics D. If one parent is homozygous recessive for that trait, any offspring are guaranteed the recessive phenotype E. By being homozygous dominant for that genotype
If Mendel chose to study inheritance of height in human, would he have likely discovered the same princeple of heredity that he discovered in working with pea plants? A. Yes, because human height is a continuously varying trait, just like the traits Mendel studied in pea plants. B. No, because the generation time in humans is relatively long compared with pea plants. C. Yes, because the principles of segregation and independent assortment also apply to human genes. D. No, because human height is not genetically determined.
Albinos produce very little of the pigment melanin in their skin and hair. Albinism is inherited as a homozygous recessive trait. In North America, about 1 in 20,000 people are albinos. a. What is the frequency of the dominant allele for albinism?b. What is the frequency of albinos?c. What is the frequency of heterozygotes?
Alkaptonuria is a recessive autosomal genetic disorder associated with darkening of the urine. In the United States, approximately 1 out of every 250,000people has alkaptonuria.a. Assuming Hardy-Weinberg equilibrium, estimatethe frequency of the allele responsible for this trait.b. What proportion of people in the U.S. populationare carriers for this trait? In this population, whatis the ratio of carriers to individuals affected byalkaptonuria?c. If a woman without alkaptonuria had a child withthis trait with one husband then remarried, what isthe chance that a child produced by her secondmarriage would have alkaptonuria?d. Alkaptonuria is a relatively benign condition, sothere is little selective advantage to individualswith any genotype; as a result, your assumptionof Hardy-Weinberg equilibrium in part (a) is reasonable. Could you also use the assumption ofHardy-Weinberg equilibrium to estimate the allelefrequencies and carrier frequencies of more severerecessive autosomal conditions…
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In some breeds of chickens, there are alleles for black color and white color. Neither of these alleles is dominant over the other. When a chicken of one of these breeds has both of these alleles, its color is black-and-white spotted (which is also called erminette). If a spotted chicken is bred with a black chicken, the phenotypes of the offspring will occur in what ratio? (Hint: Construct a Punnett square to help you answer this question.) A 1:2:1 ratio of black, spotted, and white A 1:1 ratio of spotted and white A 1:1 ratio of black and spotted A 1:3 ratio of white and black In these breeds of chickens, the alleles for color are an example of codominance or imcomplete dominance? In one species of finch, there are alleles for yellow color and red color, but neither of these alleles is dominant over the other. When a finch of this species has both of these alleles, its color is orange. If an orange finch is bred with a yellow finch, the…
Imagine that Mendel is tending a garden of 100 pea plants. He has 20 plants that are homozygous for the purple allele, 50 plants that are heterozygous, and 30 plants that are homozygous for the white allele. A) What is the frequency of the purple (P) allele? B) What is the frequency of the white (p) allele?
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Albinism is a rare genetic condition, occurring in only one in every 17,000 to 22,000 individuals in the world (Campbell et al. 2003; Gronskov et al. 2007).a. What can you conclude about the allelic frequency of the a allele globally?b. Where do you think the a allele would be more commonly found, among the heterozygotes (Aa) or the homozygote recessives (aa)? Why do you say so?c. What happens to an individual who is albino (aa) or who has very low or lacks melanin pigments in the hair, skin and eyes?d. Based on your answer in c, how would you explain the frequency of the a allele?