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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Can someone help me with these genetics questions about Punnett squares and pedigrees?

Transcribed Image Text:## Genetics Pedigree Analysis
### Pedigree Diagram Explanation:
The diagram is a pedigree chart representing the inheritance of a genetic trait across three generations. Circles represent females, and squares represent males. Filled shapes indicate individuals displaying the trait, and unfilled shapes represent those who do not display the trait.
- **First Generation:**
- Individuals 1 and 2 are at the top of the pedigree. Individual 1 is affected.
- **Second Generation:**
- Individuals 3, 4, 5, 6, 7, and 8. Individuals 4, 5, 7, and 8 display the trait.
- **Third Generation:**
- Individuals 9, 10, 11, 12, 13, 14, and 15. Individuals 9, 13, 14, and 15 display the trait.
### Questions to Consider:
24. **Genotype Possibilities:**
- Write possible genotypes for each individual below their number.
25. **Carrier Identification:**
- If applicable, indicate carrier individuals by drawing a line through them.
26. **Inheritance Pattern:**
- Determine the pattern of inheritance displayed by the trait (e.g., autosomal dominant, autosomal recessive).
### Additional Scenario:
**Individual 9's Marriage and Offspring:**
- Individual 9 marries an unaffected individual (not shown).
- They have four children: two boys and two girls.
27. **Punnett Squares:**
- Use Punnett squares to demonstrate possible gametes from this pairing.
### Probability Questions:
28. **Children Displaying the Trait:**
- Calculate the probability that their children will display the trait.
29. **Daughters Displaying the Trait:**
- Determine the probability that one of their daughters will display the trait.
30. **Sons Displaying the Trait:**
- Determine the probability that one of their sons will display the trait.
31. **Probability Differences:**
- Assess if there is a difference in probability between sons and daughters displaying the trait, and explain why or why not.
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