5. Albinism in humans is expressed as the absence of pigment from the skin, hair, and eyes. Using the information in Figure 10-6, determine whether albinism is inher- sited as a dominant or as a recessive trait. Affected individuals are represented by shaded squares and circles. Andrew Ann John Bill TO FIGURE 10-6. Pedigree Showing Albino Individuals Marie a. Underneath each circle and square in the pedigree, enter the genotype of that individual. b. (Circle one answer). Albinism is a trait that is probably inherited through a dominant / recessive allele. Support your answer with information from the pedigree.

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**Albinism in Humans: An Analysis of Pedigree Inheritance Patterns**

**Question 5:**  
Albinism in humans is characterized by the absence of pigment in the skin, hair, and eyes. Using the information in Figure 10-6, assess whether albinism is inherited as a dominant or a recessive trait. The affected individuals are represented by shaded squares and circles.

**Pedigree Analysis:**
The diagram is a pedigree chart illustrating the inheritance of albinism in a family. Squares represent males, and circles represent females. Shaded symbols indicate individuals affected by albinism. 

**Individuals:**
- The first generation includes Bill (unshaded square) and Marie (unshaded circle).
- The second generation consists of Ann (unshaded circle), John (shaded square), and three other unshaded individuals.
- Andrew (shaded square) represents the third generation.

**Task (a):** 
Underneath each circle and square in the pedigree, enter the genotype of that individual.

**Task (b):** 
(Circle one answer). Albinism is a trait that is probably inherited through a **dominant / recessive** allele.

**Support your answer with information from the pedigree:**

Analysis of the pedigree chart suggests that albinism is inherited as a recessive trait. This is inferred because:

- Both parents, Bill and Marie, are unaffected by albinism but have a child, John, who is affected.
- John and his partner, Ann, have a child, Andrew, who is also affected even though Ann is unaffected.

Considering these patterns, albinism being a recessive trait means that John and Ann both carry one recessive allele (unaffected carriers) while Andrew inherits the recessive allele from both parents, resulting in his being affected.
Transcribed Image Text:**Albinism in Humans: An Analysis of Pedigree Inheritance Patterns** **Question 5:** Albinism in humans is characterized by the absence of pigment in the skin, hair, and eyes. Using the information in Figure 10-6, assess whether albinism is inherited as a dominant or a recessive trait. The affected individuals are represented by shaded squares and circles. **Pedigree Analysis:** The diagram is a pedigree chart illustrating the inheritance of albinism in a family. Squares represent males, and circles represent females. Shaded symbols indicate individuals affected by albinism. **Individuals:** - The first generation includes Bill (unshaded square) and Marie (unshaded circle). - The second generation consists of Ann (unshaded circle), John (shaded square), and three other unshaded individuals. - Andrew (shaded square) represents the third generation. **Task (a):** Underneath each circle and square in the pedigree, enter the genotype of that individual. **Task (b):** (Circle one answer). Albinism is a trait that is probably inherited through a **dominant / recessive** allele. **Support your answer with information from the pedigree:** Analysis of the pedigree chart suggests that albinism is inherited as a recessive trait. This is inferred because: - Both parents, Bill and Marie, are unaffected by albinism but have a child, John, who is affected. - John and his partner, Ann, have a child, Andrew, who is also affected even though Ann is unaffected. Considering these patterns, albinism being a recessive trait means that John and Ann both carry one recessive allele (unaffected carriers) while Andrew inherits the recessive allele from both parents, resulting in his being affected.
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