Sample Exam One Answers

Sample Exam One Answers - BioS220 Exam I Fall 1998 _ _ Last...

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

View Full Document Right Arrow Icon
BioS220 Exam I Fall 1998 Page 1 ____________________ ______________________ ______________ Last name, first name Social Security Number TA BIOS220 HOUR EXAM I SEPTEMBER 1998 INSTRUCTIONS Before you begin please WRITE YOUR NAME ON EVERY PAGE. This exam consists of 8 questions worth a total of 100 points. Read over the exam, checking that you have all the questions, and budget your time accordingly. Show all work. Answers must be confined to the corresponding question page since the pages will be separated for grading. For that reason it is also imperative that your name be written on every page. Question # Maximum points Points earned 1 12 2 15 3 15 4 7 5 12 6 20 7 9 8 10 Total
Background image of page 1

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

View Full DocumentRight Arrow Icon
BioS220 Exam I Fall 1998 Page 2 ____________________ ______________________ ______________ Last name, first name Social Security Number TA 1. (12 pts) Draw a cartoon showing meiotic metaphase I for an organism where 2N=2. Be sure to label centromeres, sister chromatids, and homologs. Sister chromatids Homologs centromeres
Background image of page 2
BioS220 Exam I Fall 1998 Page 3 ____________________ ______________________ ______________ Last name, first name Social Security Number TA 2. A trihybrid AaBbDd is selfed. All loci are autosomal and unlinked. The phenotypes associated with AA and Aa are identical, and differ from the aa phenotype. Likewise the phenotypes associated with BB and Bb are identical, and differ from the bb phenotype. The Dd and dd phenotypes differ, while organisms that inherit two copies of the D allele die before birth. a. (5 pts) What proportion of the viable progeny will be phenotypically identical to the parents? ¾ X ¾ X 2/3
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.

Page1 / 10

Sample Exam One Answers - BioS220 Exam I Fall 1998 _ _ Last...

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