Suppose that Becky has myotonic dystrophy and shows traits such as uncontrolled muscle activity. Becky's mother, Jess, is dystrophic, but her father is normal. Becky is married to Mike, and Mike is normal. Becky and Mike have a daughter, Lisa, and two sons, Phil and Erik. Lisa and Phil are normal, but Erik is dystrophic. Becky's sister, Jill, is normal. Jill's husband and their only child are also normal. Becky's brother, Dave, is dystrophic, and has three children with Mary, who is normal. Dave and Mary have two daughters, Pat and Sandy, as well as a son, Carl. Pat is normal, but Sandy and Carl are dystrophic. The image shown is the pedigree of Becky's family. Label six of the pedigree symbols with the corresponding names of the individuals in Becky's family. Not all names will be placed. I 1 II 3 4 6. 7 III 9. 10 11 12 13, 14 15 Answer Bank

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The image represents a pedigree chart showing the inheritance of myotonic dystrophy in Becky's family. Pedigree charts are used to trace the occurrence of traits in families across generations.

**Key Individuals and Their Characteristics:**

1. **Becky (4)** - Has myotonic dystrophy (filled symbol). Daughter of Jess (3) and partner (not shown).
2. **Jess (3)** - Becky's mother, has myotonic dystrophy (filled symbol).
3. **Becky's father (1)** - Normal (unfilled symbol).
4. **Mike (5)** - Becky’s husband, normal (unfilled symbol).
5. **Phil (9)** - Becky's son, normal (unfilled symbol).
6. **Erik (11)** - Becky's son, has myotonic dystrophy (filled symbol).
7. **Dave (7)** - Becky's brother, has myotonic dystrophy (filled symbol).
8. **Mary (8)** - Dave’s wife, normal (unfilled symbol).
9. **Sandy (13)** - Dave and Mary’s daughter, has myotonic dystrophy (filled symbol).
10. **Carl (14)** - Dave and Mary’s son, normal (unfilled symbol). 
11. **Pat (15)** - Dave and Mary's child, normal (unfilled symbol).

**Pedigree Chart Details:**

- **Generations:** The chart spans three generations (I, II, III).
- **Symbols:** Circles indicate females, squares indicate males. Filled symbols represent individuals with myotonic dystrophy, and unfilled symbols represent normal individuals.
- **Relationships:** Horizontal lines connecting a circle and a square represent marriages or partnerships, and vertical lines leading to horizontal lines represent their children.

This chart effectively shows how myotonic dystrophy is passed through Becky's family, highlighting the genetic connections and the likelihood of inheriting the condition.
Transcribed Image Text:The image represents a pedigree chart showing the inheritance of myotonic dystrophy in Becky's family. Pedigree charts are used to trace the occurrence of traits in families across generations. **Key Individuals and Their Characteristics:** 1. **Becky (4)** - Has myotonic dystrophy (filled symbol). Daughter of Jess (3) and partner (not shown). 2. **Jess (3)** - Becky's mother, has myotonic dystrophy (filled symbol). 3. **Becky's father (1)** - Normal (unfilled symbol). 4. **Mike (5)** - Becky’s husband, normal (unfilled symbol). 5. **Phil (9)** - Becky's son, normal (unfilled symbol). 6. **Erik (11)** - Becky's son, has myotonic dystrophy (filled symbol). 7. **Dave (7)** - Becky's brother, has myotonic dystrophy (filled symbol). 8. **Mary (8)** - Dave’s wife, normal (unfilled symbol). 9. **Sandy (13)** - Dave and Mary’s daughter, has myotonic dystrophy (filled symbol). 10. **Carl (14)** - Dave and Mary’s son, normal (unfilled symbol). 11. **Pat (15)** - Dave and Mary's child, normal (unfilled symbol). **Pedigree Chart Details:** - **Generations:** The chart spans three generations (I, II, III). - **Symbols:** Circles indicate females, squares indicate males. Filled symbols represent individuals with myotonic dystrophy, and unfilled symbols represent normal individuals. - **Relationships:** Horizontal lines connecting a circle and a square represent marriages or partnerships, and vertical lines leading to horizontal lines represent their children. This chart effectively shows how myotonic dystrophy is passed through Becky's family, highlighting the genetic connections and the likelihood of inheriting the condition.
The image appears to be part of a pedigree chart, often used in genetics to illustrate family relationships and traits. The chart is labeled with Roman numeral "III," indicating a particular generation. Below the Roman numeral, individuals are numbered sequentially from 9 to 15.

- **Symbols**:
  - Squares represent males.
  - Circles represent females.
  - Filled symbols (black) indicate that the individual possesses a particular trait.
  - Unfilled symbols are individuals without the trait.

- **Lines**:
  - Vertical lines drop from parents to their children.
  - Horizontal lines connect mating couples.
  
- **Individuals**:
  - Person 9 is a filled black square.
  - Person 10 is an unfilled circle.
  - Person 11 is a filled black circle.
  - Person 12 is an unfilled square.
  - Person 13 is a filled black square.
  - Person 14 is an unfilled circle.
  - Person 15 is an unfilled square.

There are two dashed-line boxes pointing to individuals 10 and 13, indicating areas to input answers. Below the chart is an "Answer Bank" consisting of names: Dave, Pat, Erik, Becky, Mike, Jess, Carl, and Sandy. These names are in button format, suggesting a drag-and-drop or selection activity to match names to individuals on the chart.
Transcribed Image Text:The image appears to be part of a pedigree chart, often used in genetics to illustrate family relationships and traits. The chart is labeled with Roman numeral "III," indicating a particular generation. Below the Roman numeral, individuals are numbered sequentially from 9 to 15. - **Symbols**: - Squares represent males. - Circles represent females. - Filled symbols (black) indicate that the individual possesses a particular trait. - Unfilled symbols are individuals without the trait. - **Lines**: - Vertical lines drop from parents to their children. - Horizontal lines connect mating couples. - **Individuals**: - Person 9 is a filled black square. - Person 10 is an unfilled circle. - Person 11 is a filled black circle. - Person 12 is an unfilled square. - Person 13 is a filled black square. - Person 14 is an unfilled circle. - Person 15 is an unfilled square. There are two dashed-line boxes pointing to individuals 10 and 13, indicating areas to input answers. Below the chart is an "Answer Bank" consisting of names: Dave, Pat, Erik, Becky, Mike, Jess, Carl, and Sandy. These names are in button format, suggesting a drag-and-drop or selection activity to match names to individuals on the chart.
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