Biology Reference
In-Depth Information
The differences in population growth and unique allele retention seen
for these trials are related to a 6.4% decrease in observed heterozygosity
(Fig. 17.18A) and an increased F value for trial h (graph B), refl ecting greater
inbreeding, unique allele loss, and spatial subdivision when the founders are
placed in three lines perpendicular to the corridor rather than in a square,
1.00
hhhhhhhh
h
h
jjjjjjj
j
j
j
j
A
h
j
h
j
0.95
h
j
h
j
j
h
j
h
0.90
j
h
j
j
h
j
h
j
j
0.85
h
j
j
h
j
j
h
j
j
j
h
h
0.80
h
h
h
hh
h
0.75
0
10
20
30
0.11
h
h
h
B
h
h
h
h
j
0.07
j
h
j
j
h
j
h
j
j
h
j
h
j
j
h
j
j
h
j
0.03
h
j
h
j
j
h
j
h
h
h
h
j
j
j
h
j
j
-0.01
h
j
j
h
h
j
j
h
j
hh
h
h
j
j
j
-0.05
0
10
20
30
GENERATION
Fig. 17.18
Observed heterozygosity levels (A) and F values (B) across generations for two
dioecious perennial populations growing in a preserve-corridor-preserve system with
identical input conditions except that trial h has the 172 founders placed in three separate lines
perpendicular to the corridor while trial j has founders arranged in a square. In both trials, the
founders are introduced into only one of the preserves, there are 4 grid points between any
two founders, and founders are at least 100 units from the opening of the corridor.
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