Lec9PracProb

Lec9PracProb - Prac.ce
Problem
...

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Unformatted text preview: Prac.ce
Problem
 Which
is
NOT
true
of
plasmids?
 a. 
They
usually
carry
essen.al
genes
for
bacterial
 survival.
 b. 
Their
replica.on
is
independent
of
the
chromosomal
 DNA.
 c. 
They
are
used
extensively
in
gene.c
engineering.
 d. 
They
can
provide
an.bio.c
resistance.
 e. 
They
consist
of
double‐stranded
DNA.
 Prac.ce
Problem
 To
map
three
genes
in
E.
coli,
interrupted
conjuga:on
was
used.
 The
donor
genes
appeared
in
the
recipient
as
follows:
azi
at
9
 minutes,
leu
at
6
minutes,
and
pro
at
12
minutes.
Which
gene
is
 in
the
middle?
 a. 
azi
 b. 
leu
 c. 
pro
 d. 
cannot
be
determined
 Prac.ce
Problem
 If
a
heterozygous
parent
(AB/ab)
is
test‐crossed
to
a
 homozygous
recessive
(ab/ab),
what
will
the
progeny
 phenotypic
ra:o
be
if
genes
A
and
B
are
completely
 linked?
 a.  1AB:1Ab:1aB:1ab
 b.  9AB:3Ab:3aB:1ab
 c.  1AB:1ab
 d.  none
of
the
above
 ...
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This note was uploaded on 10/18/2011 for the course GEN 380 taught by Professor Glodowski during the Spring '11 term at Rutgers.

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