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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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**THEME I:** The following pedigrees illustrate the inheritance of traits determined by a single gene, with the condition represented by black or dark gray symbols and the alternative phenotype by gray or white symbols. **Question:** What is the most likely mode of inheritance of the character in dark gray in pedigree a, and in black in pedigrees b and c? Please justify briefly. ### Pedigree Descriptions #### a) - **Diagram Explanation:** The pedigree consists of three generations. The first generation has one individual with dark gray shading (representing the condition). - **Mode of Inheritance:** [Answer] - **Justification:** Because [Brief Explanation] #### b) - **Diagram Explanation:** This pedigree includes three generations with multiple individuals shaded black, indicating expression of the condition. - **Mode of Inheritance:** [Answer] - **Justification:** Because [Brief Explanation] #### c) - **Diagram Explanation:** This pedigree displays three generations, showcasing individuals with black shading, indicating they carry the condition. - **Mode of Inheritance:** [Answer] - **Justification:** Because [Brief Explanation] These diagrams and their analyses are crucial for understanding genetic inheritance and the expression of single-gene traits. By examining patterns within the pedigrees, one can deduce whether a trait is autosomal or sex-linked, and whether it is dominant or recessive.
Transcribed Image Text:**THEME I:** The following pedigrees illustrate the inheritance of traits determined by a single gene, with the condition represented by black or dark gray symbols and the alternative phenotype by gray or white symbols. **Question:** What is the most likely mode of inheritance of the character in dark gray in pedigree a, and in black in pedigrees b and c? Please justify briefly. ### Pedigree Descriptions #### a) - **Diagram Explanation:** The pedigree consists of three generations. The first generation has one individual with dark gray shading (representing the condition). - **Mode of Inheritance:** [Answer] - **Justification:** Because [Brief Explanation] #### b) - **Diagram Explanation:** This pedigree includes three generations with multiple individuals shaded black, indicating expression of the condition. - **Mode of Inheritance:** [Answer] - **Justification:** Because [Brief Explanation] #### c) - **Diagram Explanation:** This pedigree displays three generations, showcasing individuals with black shading, indicating they carry the condition. - **Mode of Inheritance:** [Answer] - **Justification:** Because [Brief Explanation] These diagrams and their analyses are crucial for understanding genetic inheritance and the expression of single-gene traits. By examining patterns within the pedigrees, one can deduce whether a trait is autosomal or sex-linked, and whether it is dominant or recessive.
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