2008_Final_Exam_key - Biol 241 - Spring 2008 Final Exam...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
Biol 241 - Spring 2008 Final Exam 5/03/2008 Total: 150 points 75 questions (2 point each) Use the answer sheet (bubble sheet) because the question booklet will not be graded. Be sure the answer sheet is filled in with #2 pencil. Be sure to fill in your identifying information (name, student ID number) completely and accurately. Good luck!
Background image of page 1

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

View Full DocumentRight Arrow Icon
Spring 2008, Biol 241 Final exam 1. Which two of the following phrases briefly describe Mendel’s first and second laws? A) Equal segregation of alleles B) Discontinuous (no blending) variation of traits C) Independent assortment D) Dominance and recessiveness E) Homozygous and heterozygous 2. A circular DNA molecule is subjected to single and double digestions with restriction enzymes, and the products are separated by gel electrophoresis. The results are given below (fragment size in kb): If this plasmid is digested with EcoRI, HindIII, and BamHI, what are the sizes of the fragments when separated by gel electrophoresis? A) 5, 4, 2, and 1 kb B) 4, 4, 2, 1, and 1 kb C) 4, 3, 2, 2, and 1 kb D) 4, 3, 3, 1, and 1 kb E) 3, 3, 3, 2, and 1 kb 3. This plasmid is digested with EcoRI, HindIII, and BamHI, and separated by gel electrophoresis. The bands are then blotted onto a membrane and hybridized with a radioactively labeled probe, made by using the 4kb fragment from the EcoR1 digest. Which band(s) will be detected in this Southern blot? A) 5 kb B) 4 kb C) 3 and 1 kb D) 2 and 2 kb E) 3, 2, and 1 kb 2
Background image of page 2
Spring 2008, Biol 241 Final exam 4. If a wing-less male fly is crossed with a wing-less female fly and all progeny have wings, you could conclude: A) No complementation occurred, and the parents carry mutations in the same gene B) Complementation occurred, and the parents carry mutations in different genes C) Recombination occurred, and the parents carry mutations in different genes D) The wing-less mutations are on the X chromosome E) The wing-less mutations are autosomal dominant 5. In mice, a short-tailed mutant was discovered. When it was crossed to a normal long-tailed mouse, 4 offspring were short-tailed and 3 were long- tailed. Two short-tailed mice form the F 1 generation were selected and crossed. They produced 6 short-tailed and 3 long-tailed mice. These genetic experiments were repeated three times with approximately the same results. What is the mode of inheritance? A) Incomplete penetrance B) Recessive epistasis C) Dominant epistaiss D) Recessive lethality E) X-linked trait 6. A mouse that carries two wild-type alleles of Igf2 is normal in size, whereas a mouse that carries two mutant Igf2 alleles lacks a growth factor and is a dwarf. It is known that the Igf2 gene undergoes female-specific imprinting. Thus, if a normal-sized heterozygous ( lgf2/+ ) male mouse is mated with normal-sized homozygous ( +/+) female, what is the phenotypic ratio? A) All normal
Background image of page 3

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

View Full DocumentRight Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 03/30/2011 for the course BIOL 241 taught by Professor Henrychang during the Spring '10 term at Purdue University-West Lafayette.

Page1 / 19

2008_Final_Exam_key - Biol 241 - Spring 2008 Final Exam...

This preview shows document pages 1 - 4. Sign up to view the full document.

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