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### Genetics: Understanding Ocular Albinism **Ocular albinism** is a sex-linked recessive disorder carried on the X chromosome. It predominantly affects the pigmentation of the eyes, leading to visual impairment among other symptoms. If a female carrier of ocular albinism (with one affected X chromosome and one normal X chromosome) mates with a male who has ocular albinism (affected X chromosome), we can determine the probability of their children inheriting the condition. **Question:** A female carrier mates with a male with this disorder. What percentage of all their children is predicted to be an albino female? **Options:** 1. 0% 2. 25% 3. 50% 4. 75% 5. 100% **Explanation:** To solve this problem, we must understand the inheritance pattern of X-linked recessive diseases. Here are the possible genetic outcomes for their offspring: - **Female Children**: - One X chromosome from the mother (carrier: XʰX) and one X chromosome from the father (affected: XʰY). - Possibilities: XʰXʰ (affected female), XʰX (carrier female). - **Male Children**: - One X chromosome from the mother (carrier: XʰX) and one Y chromosome from the father (affected: XʰY). - Possibilities: XʰY (affected male), XY (normal male, non-affected). Using a Punnett square can further illustrate these probabilities. However, regarding the question, female offspring can either be affected (XʰXʰ) or carriers (XʰX). The punnett square outcomes are: - Female Offspring: 50% XʰXʰ (albino), 50% XʰX (carrier) - Male Offspring: 50% XʰY (albino), 50% XY (non-affected) **Correct Answer:** 3. 50% of all female children are predicted to be albino. This understanding helps in genetic counseling and guides expecting parents on the possible outcomes for their children.

### Genetics: Understanding Ocular Albinism **Ocular albinism** is a sex-linked recessive disorder carried on the X chromosome. It predominantly affects the pigmentation of the eyes, leading to visual impairment among other symptoms. If a female carrier of ocular albinism (with one affected X chromosome and one normal X chromosome) mates with a male who has ocular albinism (affected X chromosome), we can determine the probability of their children inheriting the condition. **Question:** A female carrier mates with a male with this disorder. What percentage of all their children is predicted to be an albino female? **Options:** 1. 0% 2. 25% 3. 50% 4. 75% 5. 100% **Explanation:** To solve this problem, we must understand the inheritance pattern of X-linked recessive diseases. Here are the possible genetic outcomes for their offspring: - **Female Children**: - One X chromosome from the mother (carrier: XʰX) and one X chromosome from the father (affected: XʰY). - Possibilities: XʰXʰ (affected female), XʰX (carrier female). - **Male Children**: - One X chromosome from the mother (carrier: XʰX) and one Y chromosome from the father (affected: XʰY). - Possibilities: XʰY (affected male), XY (normal male, non-affected). Using a Punnett square can further illustrate these probabilities. However, regarding the question, female offspring can either be affected (XʰXʰ) or carriers (XʰX). The punnett square outcomes are: - Female Offspring: 50% XʰXʰ (albino), 50% XʰX (carrier) - Male Offspring: 50% XʰY (albino), 50% XY (non-affected) **Correct Answer:** 3. 50% of all female children are predicted to be albino. This understanding helps in genetic counseling and guides expecting parents on the possible outcomes for their children.

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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### Genetics: Understanding Ocular Albinism **Ocular albinism** is a sex-linked recessive disorder carried on the X chromosome. It predominantly affects the pigmentation of the eyes, leading to visual impairment among other symptoms. If a female carrier of ocular albinism (with one affected X chromosome and one normal X chromosome) mates with a male who has ocular albinism (affected X chromosome), we can determine the probability of their children inheriting the condition. **Question:** A female carrier mates with a male with this disorder. What percentage of all their children is predicted to be an albino female? **Options:** 1. 0% 2. 25% 3. 50% 4. 75% 5. 100% **Explanation:** To solve this problem, we must understand the inheritance pattern of X-linked recessive diseases. Here are the possible genetic outcomes for their offspring: - **Female Children**: - One X chromosome from the mother (carrier: XʰX) and one X chromosome from the father (affected: XʰY). - Possibilities: XʰXʰ (affected female), XʰX (carrier female). - **Male Children**: - One X chromosome from the mother (carrier: XʰX) and one Y chromosome from the father (affected: XʰY). - Possibilities: XʰY (affected male), XY (normal male, non-affected). Using a Punnett square can further illustrate these probabilities. However, regarding the question, female offspring can either be affected (XʰXʰ) or carriers (XʰX). The punnett square outcomes are: - Female Offspring: 50% XʰXʰ (albino), 50% XʰX (carrier) - Male Offspring: 50% XʰY (albino), 50% XY (non-affected) **Correct Answer:** 3. 50% of all female children are predicted to be albino. This understanding helps in genetic counseling and guides expecting parents on the possible outcomes for their children.
Transcribed Image Text:### Genetics: Understanding Ocular Albinism **Ocular albinism** is a sex-linked recessive disorder carried on the X chromosome. It predominantly affects the pigmentation of the eyes, leading to visual impairment among other symptoms. If a female carrier of ocular albinism (with one affected X chromosome and one normal X chromosome) mates with a male who has ocular albinism (affected X chromosome), we can determine the probability of their children inheriting the condition. **Question:** A female carrier mates with a male with this disorder. What percentage of all their children is predicted to be an albino female? **Options:** 1. 0% 2. 25% 3. 50% 4. 75% 5. 100% **Explanation:** To solve this problem, we must understand the inheritance pattern of X-linked recessive diseases. Here are the possible genetic outcomes for their offspring: - **Female Children**: - One X chromosome from the mother (carrier: XʰX) and one X chromosome from the father (affected: XʰY). - Possibilities: XʰXʰ (affected female), XʰX (carrier female). - **Male Children**: - One X chromosome from the mother (carrier: XʰX) and one Y chromosome from the father (affected: XʰY). - Possibilities: XʰY (affected male), XY (normal male, non-affected). Using a Punnett square can further illustrate these probabilities. However, regarding the question, female offspring can either be affected (XʰXʰ) or carriers (XʰX). The punnett square outcomes are: - Female Offspring: 50% XʰXʰ (albino), 50% XʰX (carrier) - Male Offspring: 50% XʰY (albino), 50% XY (non-affected) **Correct Answer:** 3. 50% of all female children are predicted to be albino. This understanding helps in genetic counseling and guides expecting parents on the possible outcomes for their children.
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