Group+17

Fiona Dunham Heidi McIlvenny Jennifer Lewis Olivia Lewis Daniel Yarger
 * Group Members:**

Revised Sampling Strategy

-Chose the sampling sites where the snails are most abundant

-Determine snail color so sampling is consistent

-Sample sites will be 5m x 5m, and 20m apart from each other

-3 horizontal transects, 2 samples at each site in the shrub and the woodland

Hypothesis

-There is selection acting upon Capaea nermoralis populations in different habitats.

Null Hypothesis

- There is no selection actin upon Capaea nemoralis in different habitats.

Why we revised our experiment....

-We are now sampling only 2 types of habitat because we want larger sample sizes and more repetition to make our sample more representative of the population and out data more reliable. Our distance between the samples is greater so as to reduce gene flow and have independent sample sites. We have eliminated a variable by controlling the altitude at all sample sites.

Expected Results

-If there no selection acting upon the populations then we expect to see the same frequencies of alleles in all the habitats

-If the allele frequencies are different this could be due to genetic drift or gene flow, but our sites should be far enough apart to reduce gene flow