2. (25 points total) Imagine that you are a Nature Conservancy biologist studyin

Question

2. (25 points total) Imagine that you are a Nature Conservancy biologist studying two populations of redwood sorrel (Oxalis oregang) in the coastal forests near Mendocino, CA. Redwood sorrel is an understory herb adapted for low light and moist environments. Its leaves are among the favored delicacies of slugs and other forest herbivores. In the two parks you are monitoring, rangers are conducting controlled burns every 5 years to encourage the establishment of coast redwood seedlings. Their relatively cool ground fires kill living 0. oregang plants, but not their seeds, which readily germinate on the soil layers exposed by burning. Redwood sorrel populations are polymorphic for leaf pattern: seedlings and adults display one of two leaf morphs (see table below). Previous genetic work has shown that a single gene (locus L) with two alleles (L1 and L2) control the leaf polymorphism. You began a study of two 0. oregang populations (Shady Woods and Big Timber) just after burns were conducted in 2012. You searched exhaustively through each burn area in December 2012, and new redwood sorrel seedlings were counted and characterized by their leaf patterns. You also conducted genetic work to distinguish between LL2 plants and the homozygotes. The 2012 seedling data appear on the tables below (use the dataset for your last name). No more seedlings emerged after 2012, confirming the importance of recent fire to regeneration of this species. Another burn was conducted in October 2017, so you returned to both sites in September and re-surveyed the surviving redwood sorrel plants from the 2012 cohort, which had recently become reproductively mature, and analyzed them genetically. The 2017 survivor data appear on the tables below (use the dataset for your last name). O John Pelafigue

Explanation / Answer

L1 is striped leaves and L2 is blotched leves. the no. was decreas because the other gene was present around them is dominet on the L1 and L2 genedue to this reason thay decrease intheir no in both of site

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