The following questions refer to the pedigree chart in the figure below for a family, some of whose members exhibit the dominant trait, W. Affected individuals are indicated by a dark square or circle. 1 2 I Ww ww 2 3 4 5 II O, III 2 3 IV What is the probability that individual III- 1 is Ww?

Human Anatomy & Physiology (11th Edition)
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Chapter1: The Human Body: An Orientation
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### Pedigree Analysis

The following questions pertain to the pedigree chart illustrated below for a family, where some members exhibit the dominant trait, \( W \). Affected individuals are denoted by dark squares or circles.

#### Pedigree Chart Description:

- **Generation I:**
  - Individual 1: Male (open square), genotype \( ww \).
  - Individual 2: Female (filled circle), genotype \( Ww \).

- **Generation II:**
  - Individuals 2 and 3: Both male (open squares).
  - Individual 4: Female (filled circle).
  - Individual 5: Female (open circle).
  - Individuals 6, 7, and 8: Males (open squares).

- **Generation III:**
  - Individual 1: Male (filled square).
  - Individual 2: Male (open square).
  - Individual 3: Female (open circle).
  - Individual 4: Female (open circle).

- **Generation IV:**
  - Individual 1: Female (open circle).
  - Individuals 2 and 3: Males (filled squares).
  - Individual 4: Female (open circle).

Each generation is denoted by roman numerals, and individuals are numbered sequentially within each generation.

#### Question:

What is the probability that individual III-1 is \( Ww \)?

- 2/4
- 1
- 3/4
- 1/4
Transcribed Image Text:### Pedigree Analysis The following questions pertain to the pedigree chart illustrated below for a family, where some members exhibit the dominant trait, \( W \). Affected individuals are denoted by dark squares or circles. #### Pedigree Chart Description: - **Generation I:** - Individual 1: Male (open square), genotype \( ww \). - Individual 2: Female (filled circle), genotype \( Ww \). - **Generation II:** - Individuals 2 and 3: Both male (open squares). - Individual 4: Female (filled circle). - Individual 5: Female (open circle). - Individuals 6, 7, and 8: Males (open squares). - **Generation III:** - Individual 1: Male (filled square). - Individual 2: Male (open square). - Individual 3: Female (open circle). - Individual 4: Female (open circle). - **Generation IV:** - Individual 1: Female (open circle). - Individuals 2 and 3: Males (filled squares). - Individual 4: Female (open circle). Each generation is denoted by roman numerals, and individuals are numbered sequentially within each generation. #### Question: What is the probability that individual III-1 is \( Ww \)? - 2/4 - 1 - 3/4 - 1/4
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