Biology
Biology, 24.03.2020 19:28, Joseph8439

Many plant species are "winter annuals" - their seeds germinate in summer, and the plants grow vegetatively in fall and are dormant in winter. Many plants will not flower in spring unless they have experienced a long cold period (this process is called "vernalization". In the plant model organism Arabidopsis thaliana, vernalization is an epigenetically regulated phenomenon. The gene Flowering Locus C (FLC) encodes a transcriptional repressor that prevents expression of flowering genes. When the weather is warm, the histones in FLC are acetylated, but when temperatures drop, a histone deacetylase gradually removes the histones until, after an extended period of cold, the FLC gene is silenced. At this point, flowering genes begin to activate. If the weather one winter is unusually warm, such that there is no real extended period of cold, what is the expected result in terms of both FLC inactivation, and flowering?

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Many plant species are "winter annuals" - their seeds germinate in summer, and the plants grow veget...

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