In our population there are 300 red sea stars 200 pink sea, Ask an Expert

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Q1. An abandoned indiana coal mine spoil bank contains chunks kof pyrite minerals. Under constant erosion and weathering, pyrites leech large amounts of sulfuric acid. The spoil banks are also mixed with large quqntities of basic limestone and clay carbonates. What has to happen over time?

Q2. Let's assume that colour in sea stars is controlled by one gene with two alleles: R and r. The alleles for this gene illustrate incomplete dominance, so there are three colours of sea stars: red (RR), pink (Rr) and white (rr). In our population there are 300 red sea stars, 200 pink sea stars and 500 White Sea stars. How numerous total alleles for sea star colour are in this population?

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