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BIS101-003. Office hours/review sessions for Midterm I. Midterm I - Tuesday, October 21 Office hours/review sessions: R Oct 16 1-2pm 145ABriggs Rima F Oct 17 12-1pm 3061SLB Engebrecht Su Oct 19 6-8pm 2205Haring Engebrecht M Oct 20 12-1pm 3061SLB Rebecca.

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bis101 003
BIS101-003

Office hours/review sessions for Midterm I

Midterm I - Tuesday, October 21

Office hours/review sessions:

R Oct 16 1-2pm 145ABriggs Rima

F Oct 17 12-1pm 3061SLB Engebrecht

Su Oct 19 6-8pm 2205Haring Engebrecht

M Oct 20 12-1pm 3061SLB Rebecca

No calculators or cell phones during test, use pen if you want the

possibility to request a regrade

review quiz
Review Quiz

Scores: 291

Missing:2

High: 100.00%

Low: 0.00%

Median: 95.00%

Mean: 92.43%

Standard Deviation:9.95

critical genetic link found between human taste differences and nicotine dependence
Critical Genetic Link Found Between Human Taste Differences And Nicotine Dependence

http://www.sciencedaily.com/releases/2008/10/081014111301.htm

Two interacting genes related to bitter taste sensitivity,

TAS2R16 and TAS2R38

Tiny Worm Provides Model For The Genetics Of

Nicotine Dependence

http://www.sciencedaily.com/releases/2006/11/061103083610.htm

slide4

CQ1

A cross is made in E. coli between an Hfr strain that is leu+ his+

gly+ Strs and an F- strain that is leu- his- gly- StrR. Interrupted

mating studies show that his+ enters the recipient last. In an interrupted

mating between the same two strains, what medium would you select the

conjugates on before screening for recombinants?

Medium containing his and lacking streptomycin

Medium containing his and containing streptomycin

Medium lacking his and containing streptomycin

Medium lacking his and lacking streptomycin

slide5

CQ2

You select on medium lacking his and containing streptomycin and

then test by replica plating for the presence of the leu+ and gly+ alleles.

The following numbers of individuals are found for each genotype:

gly+ leu+ his+ = 259

gly- leu+ his+ = 1

gly+ leu- his+ = 11

gly- leu- his+ = 29

300

What is the gene order?

A. gly leu his

B. leu gly his

C. gly his leu

slide6

CQ3

You select on medium lacking his and containing streptomycin and

then test by replica plating for the presence of the leu+ and gly+ alleles.

The following numbers of individuals are found for each genotype:

gly+ leu+ his+ = 259

gly- leu+ his+ = 1

gly+ leu- his+ = 11

gly- leu- his+ = 29

300

leu gly his

What are the map distances between these three genes?

leu 4mu gly 10mu his

B. leu 10mu gly 4mu his

C. leu 10mu gly 10mu his

slide14

CQ4

In a generalized transduction experiment, the T1 phage particles growing on E. coli with the genotype val+ ala+ trp+ are collected and allowed to infect E. coli cells with the genotype val- ala- trp-. The cotransduction frequencies are calculated for the different gene combinations: ala-trp = 0.2

ala-val = 0.8

val-trp = 0.6

The gene order is:

A. ala - trp - val

B. ala - val - trp

C. val - ala - trp