7. A couple with widow's peaks, an autosomal dominant trait, have two grown daugh- ters and one grown son. The daughters do not have a widow's peak (straight hair line). Their son does have a widow's peak. He married a straight hair lined woman, and they have two daughters. Draw a pedigree that represents this scenario tracking the straight hair lined trait. Make sure to label all generations and provide potential genotypes for each individual on the pedigree.
7. A couple with widow's peaks, an autosomal dominant trait, have two grown daugh- ters and one grown son. The daughters do not have a widow's peak (straight hair line). Their son does have a widow's peak. He married a straight hair lined woman, and they have two daughters. Draw a pedigree that represents this scenario tracking the straight hair lined trait. Make sure to label all generations and provide potential genotypes for each individual on the pedigree.
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
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Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Transcribed Image Text:Certainly! Below is a transcription suitable for an educational website, including a detailed explanation of the provided pedigree diagram.
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**Genetics and Inheritance Patterns**
**Assignment:**
**7. Pedigree for Widow's Peak Trait**
A couple with widow's peaks, an autosomal dominant trait, have two grown daughters and one grown son. The daughters do not have a widow's peak (straight hairline). Their son does have a widow's peak. He married a straight hairlined woman, and they have two daughters. Draw a pedigree that represents this scenario, tracking the straight hairlined trait. Make sure to label all generations and provide potential genotypes for each individual on the pedigree.
---
**8. Sex-Linked Pedigree Analysis for Red-Green Color Blindness**
Observe the sex-linked pedigree provided here that is tracking the red-green color blindness trait. Please determine the genotypes for all unknown individuals:
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**Pedigree Diagram Explanation:**
The diagram is a family tree chart representing the inheritance pattern of red-green color blindness, a common X-linked recessive trait. The chart is arranged in three generations, labeled I, II, and III. Squares represent males, and circles represent females. Shaded symbols indicate individuals who express the trait (color blindness in this case).
- **Generation I** consists of two individuals (A and B), where B is not shaded.
- **Generation II** features individuals C, D, E, and F. Individuals C and F are shaded, indicating they express the trait.
- **Generation III** includes individuals E, F, G, and H with E shaded, and G and H are unshaded.
---
**Genotype Determination:**
Below each individual, potential genotypes should be determined considering the inheritance pattern of an X-linked recessive trait. Females have two X chromosomes (XX), and males have one X and one Y chromosome (XY).
a. Genotype: _____
b. Genotype: _____
c. Genotype: _____
d. Genotype: _____
e. Genotype: _____
f. Genotype: _____
g. Genotype: _____
h. Genotype: _____
Analyzing this pedigree allows one to understand how X-linked recessive traits are passed through generations. Note the implications of who can be carriers and who displays the trait, especially focusing on the role of gender in the expression of X-linked conditions.
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In this exercise, students should determine
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