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Concept explainers
To review:
The reason due to which more number of males are affected by the red-green colorblindness as compared to females, with the help of a Punnett square.
Introduction:
Some of the traits in human genes are sex linked and therefore carried on sex chromosomes. These genes show a difference in their inheritance pattern from the genes located on the autosomes. One of the examples of sex-linked genes in humans is color blindness. The gene for red-green color blindness is carried on the X-chromosome, which results in the partial inheritance pattern in male and female, with males being more affected as compared to the females.
The sex-linked inheritance can be recessive or dominant. A sex-linked dominant inheritance would result in all the offsprings affected if only a single copy of that gene is inherited. A recessive form of the allele causes the defect in the progeny only when the progeny inherits the defective copy in homozygous condition.
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Chapter 12 Solutions
EBK LIFE: THE SCIENCE OF BIOLOGY
- A woman is homozygous dominant for short fingers. She marries a man who is heterozygous for short fingers. What will the punnet square look likearrow_forwardtell whether the following carry or show the sex linked recessive spongy- tiny pores trait, also, tell whether the individual are male of femalearrow_forwardB = blue b = green. A male green coral (bb) was crossed with a blue female coral (Bb). Remember, males are on top of the Punnett square (bb). Create a Punnett square for the cross: bb x Bbarrow_forward
- Explain the Bombay Phenotype ?arrow_forwardSuppose a woman has four sons, and two are colorblind but have normal blood clotting and two have hemophilia but normal color vision. What is the probable genotype of the woman?arrow_forwardCurly hair (C) is dominant to straight hair (c). Is it possible for a curly haired man to produce curly haired children if his wife has straight hair? Explain your answer based on a Punnett square.arrow_forward
- Concepts of BiologyBiologyISBN:9781938168116Author:Samantha Fowler, Rebecca Roush, James WisePublisher:OpenStax CollegeHuman Biology (MindTap Course List)BiologyISBN:9781305112100Author:Cecie Starr, Beverly McMillanPublisher:Cengage LearningHuman Heredity: Principles and Issues (MindTap Co...BiologyISBN:9781305251052Author:Michael CummingsPublisher:Cengage Learning
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