Young: Medical Genetics - Extended Matching Questions

Table of Contents

1. Chapter 7
   1. Question 1
   2. Question 2

Question 2

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: Polymorphisms

Options:

1. Deuteranopia
2. Protanopia
3. Deuteranomaly
4. Protanomaly

From the available options select the correct description for the red-green colour defect caused by the described molecular abnormality.

1	Scenario 1   Complete deletion of a red pigment gene. Choose... Deuteranopia Protanopia Deuteranomaly Protanomaly Protanopia results from complete deletion of a red pigment gene. See Page 147.Incorrect. See Page 147.Your answer has been saved.

2

Scenario 2   Complete deletion of a green pigment gene. Choose... Deuteranopia Protanopia Deuteranomaly Protanomaly Deuteranopia results from deletion of a green pigment gene. Deutan defects are approximately 3 times more common than protan defects. John Dalton, who proposed the basis of atomic theory, was affected (see Case Celebres on this Online Resource Centre). See Page 147.Incorrect. See Page 147.Your answer has been saved.

3	Scenario 3   Formation of a 5'green-red3' hybrid gene. Choose... Deuteranopia Protanopia Deuteranomaly Protanomaly Deuteranomaly results from formation of a 5'green-red3' hybrid gene as illustrated in Figure 7.7. See Page 147.Incorrect. See Page 147.Your answer has been saved.

4	Scenario 4   Formation of a 5'red-green3' hybrid gene Choose... Deuteranopia Protanopia Deuteranomaly Protanomaly Protanomaly results from formation of a 5'red-green3' hybrid gene as shown in Figure 7.7. See Page 147.Incorrect. See Page 147.Your answer has been saved.