Coli chromosome showing the distance in terms of time

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Unformatted text preview: ions.

 
 
 
 ts1­
ts2­


x



ts1+
ts2+
 When
the
progeny
are
titered
it
is
determined
that
1
x
109
pfu/ml
of
the
progeny
phage
stock
can
 form
plaques
at
30°C
but
only
3.5
x
108
pfu/ml
can
form
plaques
at
40°C.

What
is
the
 recombination
frequency
between
the
two
ts
mutations?
(circle
correct
answer)
 
 0



1.5%



3%



3.5%



7%



9%



10%



13%



15%



17%



20%



22.5%



25%



28%



30%
 If
none
of
above,
the
correct
answer
is
 
 
 
 
 
 
 
 
 30%
 
 
 
 
 
 
 
 
 
 1c.
5
points You have three strains of E. coli, A, B, and C. Mixing A and C gives no exchange of genetic markers. A and B exchange genetic markers with a 1 in 104 frequency. B and C exchange genetic markers at a frequency...
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