The accompanying pedigree shows a family in which one child (II-1) has an autosomal recessive condition. On the basis of this fact alone, provide the following information. 1) What is the chance that among the three children in generation II who have the dominant phenotype, one of them is AAAA and two of them are AaAa? (Hint: Consider all possible orders of genotypes.)
The accompanying pedigree shows a family in which one child (II-1) has an autosomal recessive condition. On the basis of this fact alone, provide the following information. 1) What is the chance that among the three children in generation II who have the dominant phenotype, one of them is AAAA and two of them are AaAa? (Hint: Consider all possible orders of genotypes.)
Human Anatomy & Physiology (11th Edition)
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ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
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The accompanying pedigree shows a family in which one child (II-1) has an autosomal recessive condition. On the basis of this fact alone, provide the following information.
1) What is the chance that among the three children in generation II who have the dominant
Express your answer to two decimal places.
Transcribed Image Text:The image is a pedigree chart used to track the inheritance of traits through generations. It displays two generations labeled I and II.
**Explanation of Symbols:**
- Squares represent males.
- Circles represent females.
- A filled symbol indicates that the individual expresses the trait in question, while an unfilled symbol means the individual does not express the trait.
**Detailed Analysis:**
**Generation I:**
- Individual 1: A male (square) who does not express the trait (unfilled).
- Individual 2: A female (circle) who does not express the trait (unfilled).
**Generation II:**
- Individual 1: A female (circle) who expresses the trait (filled).
- Individuals 2 and 3: Males (squares) who do not express the trait (unfilled).
- Individual 4: A female (circle) who does not express the trait (unfilled).
The chart helps in understanding the pattern of inheritance, possibly indicating a recessive trait, given its presence in Generation II but not in the parents of Generation I.
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