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You are studying two populations of endangered Phlox darwinii (a flowering plant

ID: 218118 • Letter: Y

Question

You are studying two populations of endangered Phlox darwinii (a flowering plant). In population #1, you observe that within individual flowers, pollen can contact the pistil for self-fertilization. In population #2, you observe that within individual flowers pollen from the same flower rarely contacts the pistil of that flower, reducing self-fertilization. In order to study the effects of self-fertilization you sequence 20 different loci from multiple individuals in both populations. One locus is called BIB. In both population #1 and #2 you find two alleles at the BIB locus: B and b. In both populations, the frequency of B = 0.3 and the frequency of b = 0.7

- Make a prediction. If you were to look at just the population #1 data for the other 19 loci that you sequenced, would the other 19 loci have inbreeding coefficients near zero, or would they have inbreeding coefficients closer to 1, similar to that of the BIB locus in population #1? Briefly explain your reasoning.

Explanation / Answer

answer to above question :

it is important here to note that , the populations will have a different gene pool , but some loci may be similar also , SO if BIB locus is has same frequency of alleles in both population does not means all will have .

also read very carefully that ,in population #2 , the pollens of one flower hardly interact with pistil of that same flower , which reduces self fertilization .

now only keeping in mind population #1 i predict that the data for the other 19 loci which were sequenced would have inbreeding coefficients near to 1., simply because as mentioned population #1 has individual flowers in which the pollens of one flower contacts the pistil of same flower for self fertilization , resulting in more and more in breeding. thus inbreeding coefficient ( degree of self fertilization or fertilization among genetically related or similar individuals) will be near 0.

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