A dominant allele causes the formation of faulty tooth enamel. The allele, which is carmed on the X chromosome, causes either very thin or very hard enamel Pedigree Illustrating the Inheritance of Faulty Tooth Enamel 1 II 111 10 21. Which of the following rows best identifies the genotypes of individuals II-6 and III- 7? Row II-6 III-7 $X^E X^e$ $X^e Y$ $X^E X^E$ $X^e Y$ $X^E X^e$ $X^e Y$ $X^e X^e$ $X^e Y$ Use the following additional information to answer the next question A woman who is heterozygous for faulty tooth enamel has a child with a man who does not have faulty tooth enamel 22. What is the probability that this child will be a boy who does not have faulty tooth enamel? Answer: (Record your answer in the numerical-response section below.) Your answer 0000 ? Prev Next ?
Added by Cassandra B.
Close
Step 1
The woman is heterozygous for faulty tooth enamel, which means she has one dominant allele (X^E) and one recessive allele (X^e). We can represent her genotype as X^EX^e. The man does not have faulty tooth enamel, so he must have two normal alleles (X^E Show more…
Show all steps
Your feedback will help us improve your experience
Sri K and 81 other Biology educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
Amelogenesis imperfecta (AI) is a disorder of faulty tooth enamel formation. The dominant mutated allele is carried on the X chromosome. Faulty Tooth Enamel Pedigree Individuals II-7 and II-8 have another child. What is the probability that their child will be a boy who does NOT have the disorder? Select one: a. 0.13 b. 0.25 c. 0.38 d. 0.75
Sri K.
In humans, normal tooth enamel is white. A mutant allele that is dominant and linked to the X chromosome results in the production of defective tooth enamel that is brown in color. A man with brown tooth enamel marries a woman with normal teeth (no history of brown tooth enamel in her family history). Their daughter marries a man with normal tooth enamel. Answer the following questions. a) What is the probability that a son from this couple will have brown teeth? Note: 1st couple = XB/Y male crossed with XB+ / XB+ Their daughter is XB/XB+. Her husband is XB+ / Y b) What is the probability that a son from this couple will have normal teeth? c) What is the probability that a daughter from this couple will have brown teeth? d) What is the probability that a daughter from this couple will have normal teeth?
Evelyn D.
1. A woman with severe discoloration of her tooth enamel has four children with a man who has normal tooth enamel. Two of the children, a boy (Bob) and a girl (Gladys) have discolored teeth. Each has a mate with normal tooth enamel and produces several children. Gladys has 6 children, four boys and two girls. Two of her boys and one of her girls have discolored enamel. Bob has seven children, four girls and three boys. All four of his daughters have discolored enamel, but all his boys have normal enamel. a. Draw the pedigree for this family, indicating which individuals are affected with discolored enamel. b. Explain the inheritance pattern of this condition, and label genotypes accordingly.
Sukhada S.
Recommended Textbooks
Biology for AP Courses
Objective Biology for NEET
Introduction to General, Organic and Biochemistry
Transcript
Watch the video solution with this free unlock.
EMAIL
PASSWORD