Biology Reference
In-Depth Information
15000
l
A
b
l
10000
b
l
b
l
5000
g
a
b
l
g
a
g
b
l
a
g
a
g
b
l
a
g
b
l
a
g
a
g
b
l
a
g
b
l
a
g
b
a
g
l
0
b
a
g
l
b
a
g
l
b
a
g
l
b
a
g
l
0
5
10
15
1.00
g
a
b
a
l
g
l
b
B
a
b
l
g
0.95
b
a
l
b
a
g
b
a
bbb
b
bbbb
l
a
g
a
a
l
a
aa
a
a
l
l
l
l
l
l
l
l
l
g
0.90
g
g
ggg
g
g
g
g
0.85
0
5
10
15
GENERATION
Fig. 14.1
Population growth (A) and observed heterozygosity (B) across generations for bisexual
populations (a and b) versus dioecious populations (g and l) that are otherwise identical
except maximum offspring and microgamete dispersal are both 10 grid units (populations a
and g) versus 20 grid units (populations b and l). Reproduction rate is 1.825 for the bisexual
populations and 3.65 for the dioecious populations to refl ect the halving of offspring producers
in the latter. See text for more details.
strikingly, dioecious populations lost 14.8% (when maximum dispersal was
10 units) to 13.5% (maximum dispersal 20 units) more of their unique alleles
than their bisexual counterparts, even though the counterpart populations
are growing at approximately the same rates. These patterns are likely due
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