LS4 midtermI s08key(2)

LS4 midtermI s08key(2) - LS4 Midterm I INSTR: L. Johnson...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
1 LS4 Midterm I INSTR: L. Johnson Monday, April 21, 2008 NAME:_________________________________ (last) (first) I.D. #___________________________________ Signature _______________________________ INSTRUCTIONS 1. This exam is 6 pages long. Problem Value Score Before starting make sure you have all the pages. 1 22 2. Be sure to write clearly. Only 2 18 legible answers will be graded. 3 1 4 4 21 5 2 5 Total 100 KEY
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
2 NAME:_________________________________ ID# _______________________ (last) (first) (22 pts) 1. Hemophilia A is a blood clotting disorder caused by an X-linked recessive mutation of the factor VIII gene, leading to a deficiency in Factor VIII. Consider the family below where the affected individual has Hemophilia A. a) After having one affected son, Margaret and Jim are expecting another child. Amniocentesis reveals it is a boy, unfortunately the son has an extra X chromosome (XXY). Which of Mendel’s laws is violated during gamete formation leading to this son? (3pts) Mendel’s 1 st Law, law of equal segregation b) If this son turns out to have Hemophilia A, can you tell in which parent and in which division the non-disjunction occurred? Assume no crossing over. (4 pts) Mother, division II c) Diagram the non-disjunction event described in part b (giving rise to an XXY child with Hemophilia A). (7 pts) d) If this son turns out not to have Hemophilia A, can you tell in which division the non-disjunction occurred? In which parent (2 pts)
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 09/09/2008 for the course LIFESCI ls4 taught by Professor Jhonson during the Spring '08 term at UCLA.

Page1 / 6

LS4 midtermI s08key(2) - LS4 Midterm I INSTR: L. Johnson...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online