Review Questions

4.1. A study of six house sparrow (Passer domesticus) populations in Western Canada revealed an average FST of 0.136 and an average FIS of 0.085. What is the overall inbreeding coefficient across all six populations?

4.2. From the data in question 1, calculate the average indirect measure of gene flow among the house sparrow populations.

4.3. An investigation into four populations of the damselfly Coenagrion puella revealed an average Nem of 8.8 per generation, whereas mark-recapture studies identified only four immigrants during the 8-week breeding season. How could you explain this discrepancy?

4.4. What factors determine the rate at which two populations diverge genetically from one another?

4.5. The FST values between two populations of the vernal sweetgrass Anthoxanthum odoratum were estimated from AFLP and microsatellite data as follows:

AFLP

Locus 1

0.124

Locus 2

0.098

Locus 3

0.103

Locus 4

0.699

Locus 5

0.111

Locus 6

0.107

Microsatellites

Locus 1

0.327

Locus 2

0.396

Locus 3

0.421

Locus 4

0.372

Locus 5

0.345

Do these data suggest that natural selection is acting on any of the loci?

4.6. What conclusion might you reach about height QTL in ten populations of sunflowers (Helianthus annus) situated along a latitudinal gradient if QST < FST?

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