Biology Reference
In-Depth Information
70000
A
a
60000
9
50000
a
d
40000
9
a
c
9
d
30000
a
9
c
a
20000
d
9
a
c
9
a
d
9
a
10000
c
a
9
d
a
9
a
9
9
c
a
9
d
a
a
9
c
d
9
a
c
d
a
9
d
c
9
c
9
a
c
d
0
d
c
d
9
a
d
ccc
d
d
c
d
c
0
6
12
18
3000
2900
9
a
a
999
aaaaaaaaaaaaaaaa
9
9999999999999
d
c
2800
d
2700
c
d
2600
d
d
c
2500
d
d
d
d
d
d
d
d
d
d
d
c
2400
c
B
c
2300
c
c
c
c
c
c
c
c
c
c
2200
0
6
12
18
GENERATION
Fig. 17.16
Population growth (A) and unique alleles retained (B) in populations that have
identical input conditions, except that populations 9 and a are perennials living up to 60
years while populations c and d are annuals. Trials 9 and c have all 172 founders placed in
one square in one preserve, while trials a and d have the founders split into groups of 86,
the founders being placed in three narrow, elongate rows parallel to the innermost vertical
edges of the separated preserves. There are 4 grid units separating all founders, and founders
are at least 100 units from the 50-unit-wide gap (river) separating the preserves. See text for
further information.
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