A woman who is heterozygous for gene B has brown eyes. B is a dominant allele for brownpigmentation, while b is recessive allele for blue pigmentation. The woman has a patch of bluecolor in her left eye. Give THREE (3) reasons how this might occur.

The iris is the coloured tissue at the front of the eye that contains the pupil in the centre. The…

Answered: is heterozygous for gene brown eyeS.…

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter11: Genome Alterations: Mutation And Epigenetics

Section: Chapter Questions

Problem 16QP: Familial retinoblastoma, a rare autosomal dominant defect, arose in a large family that had no prior...

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Similar questions

Which members of the pedigree could have been carriers, and which might have been the source of the mutation?
Given the karyotype shown at right, is this a male or a female? Normal or abnormal? What would the phenotype of this individual be?
Familial retinoblastoma, a rare autosomal dominant defect, arose in a large family that had no prior history of the disease. Consider the following pedigree (the darkly colored symbols represent affected individuals): a. Circle the individual(s) in which the mutation most likely occurred. b. Is the person who is the source of the mutation affected by retinoblastoma? Justify your answer. c. Assuming that the mutant allele is fully penetrant, what is the chance that an affected individual will have an affected child?
A pedigree analysis was performed on the family of a man with schizophrenia. Based on the known concordance statistics, would his MZ twin be at high risk for the disease? Would the twins risk decrease if he were raised in an environment different from that of his schizophrenic brother?
With regard to the T and t alleles, explain what the wordsegregation means.
Ann's family has a history of cystic fibrosis, a recessive genetic disease. In the pedigree, family members who are afflicted with the disease are shown in red. Members who are unafflicted may or may not be carriers. Which of the given family members can be identified definitively as unafflicted carriers of cystic fibrosis?
If a Mother's genotype is IAi and her Daughter's genotype is ii and the mother claims a man who is type B as the father... a) Is that possible? Explain. b) The accused man can prove that both of his parents are type AB. Is it possible for him to be type B? If so, what is his genotype? Explain. d) Does the answer in part c change the answer in part b? Explain.
Victoria’s youngest child, Beatrice, gave birth to one daughter, one normal son, and two hemophilic sons. **Based on the pedigree, Alfonso XIII of Spain is phenotypically normal. Does that mean he received the normal gene from Beatrice? Why or Why not?**
The following pedigree illustrates the inheritance of Nance–Horan syndrome, a rare genetic condition in which affected people have cataracts and abnormally shaped teeth.
How did you identify Guinevere's genotype? is that trait recessive or dominant? What if Mike is type B, will it be possible that Guinevere's would still be type o?
The pedigree below is of a rare single gene disease. Given the pedigree shown below, what is the most likely pattern of inheritance for this disease? Explain your answer. Note that closed symbols are for individuals affected by the disease and open symbols are unaffected individuals (limit 3-4 sentences).
If a father has Marfan syndrome, but the mother does not, and he passes the disease down to only SOME of his offspring, but not all, what would the Punnett square look like? Why is this the father's genotype if only some of his children had Marfan syndrome?

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