Young: Medical Genetics - Extended Matching Questions

Table of Contents

1. Chapter 1
   1. Question 1
   2. Question 2
2. Chapter 2
   1. Question 1
   2. Question 2
3. Chapter 3
   1. Question 1
   2. Question 2
4. Chapter 4
   1. Question 1
   2. Question 2
5. Chapter 5
   1. Question 1
   2. Question 2
6. Chapter 6
   1. Question 1
   2. Question 2
7. Chapter 7
   1. Question 1
   2. Question 2
8. Chapter 8
   1. Question 1
   2. Question 2
9. Chapter 9
   1. Question 1
   2. Question 2
10. Chapter 10
    1. Question 1
    2. Question 2
11. Chapter 11
    1. Question 1
    2. Question 2
12. Chapter 12
    1. Question 1
    2. Question 2
13. Chapter 13
    1. Question 1
    2. Question 2
14. Chapter 14
    1. Question 1
    2. Question 2

Question 1

Instructions: Each group of extended matching questions consists of lettered options followed by a list of numbered problems/questions. For each numbered problem/question select the one lettered option that is most closely answers the question. You can use the lettered options once, more than once, or not at all.

Theme: Polygenic inheritance

Options:

1. 5%
2. 6.25%
3. 10%
4. 12.5%
5. 16.67%
6. 25%
7. 50%
8. 100%

Select the proportion of genes shared on average by the following relatives from the available options.

1	Scenario 1   Father and son Choose... 5% 6.25% 10% 12.5% 16.67% 25% 50% 100% These are first degree relatives. A child has two parents so will inherit half of his or her genes from each parent. See Page 118.Incorrect. See Page 118.Your answer has been saved.

2	Scenario 2   Grandmother and grandson Choose... 5% 6.25% 10% 12.5% 16.67% 25% 50% 100% These are second degree relatives. A child has 4 grandparents, so on average will inherit 25% of his or her genes from each grandparent. See Page 118.Incorrect. See Page 118.Your answer has been saved.

3	Scenario 3   Monozygotic twins Choose... 5% 6.25% 10% 12.5% 16.67% 25% 50% 100% Monozygotic twins are genetically identical and, therefore, share 100% of their genes. See Page 118.Incorrect. See Page 118.Your answer has been saved.

4	Scenario 4   First cousins Choose... 5% 6.25% 10% 12.5% 16.67% 25% 50% 100% These are third degree relatives and, therefore, share on average 1/8 (12.5%) of their genes. See Page 118.Incorrect. See Page 118.Your answer has been saved.

5

Scenario 5   Dizygotic twins Choose... 5% 6.25% 10% 12.5% 16.67% 25% 50% 100% Dizygotic (non-identical) twins are derived from different zygotes and therefore are first degree relatives, so that they share on average 50% of their genes. See Page 118.Incorrect. See Page 118.Your answer has been saved.