Lab 2 - Pedigrees & Blood Group Analysis

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Binghamton University *

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168

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Anthropology

Date

Feb 20, 2024

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Lab Assignment #2 ANTH 168/Spring 2024 Name:_________________________ Section:______ Due Feb 5/6 2024 1. Use the pedigree below to answer the following questions: a. Explain why each of the following inheritance patterns are or are not possible. Provide a short justification for full credit (e.g.: It can/cannot] be Y-linked, because it is/isn’t passed exclusively from fathers to their sons!).(3 points) - autosomal dominant: - autosomal recessive: - X-linked dominant: - X-linked recessive: - Y-linked: - Mitochondrial: 1

2. Use the below pedigree to answer the following questions: a. Could the pedigree represent a recessive trait? Why? (1 Point) b. What sex linked inheritance pattern(s) is(are) more likely? Why? (1 Point) 2

3. A man with type AB blood is married to a woman with type O blood. They have two natural children and one adopted child. John has type A blood, Jason has type B blood, and Elena has type O blood. Which child was adopted? How do you know? (1 point) 4. A woman with type AB blood is claiming that a man with type A blood is the father of her child who is type B. Show ALL the possible crosses; remember that the man can have AA or AO genotypes. Could this man be the father of the child? (1 point) 5. If a baby has blood type AB what are the possible genotypes for the mother and father? (2 points) (1 point for father, 1 point for mother) 6. How do genetic counselors use pedigrees to provide informed advice and assess the risk of genetic conditions in families? (1 point) 3

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7. Extra Credit: Design a pedigree illustrating the inheritance pattern of a hypothetical genetic trait within a family. Include multiple generations, identify affected and unaffected individuals, and indicate the relationships between family members. (2 points) 4

Lab 2 - Pedigrees & Blood Group Analysis

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