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?
Answers: 1
Biology, 22.06.2019 01:20, byrdfarm
And give a detailed description! scientist observes the boundary between two tectonic plates for a decade and finds that no new volcanoes have formed over the course of her investigation. does this result support the theory of plate tectonics? why or why not?
Answers: 3
Biology, 22.06.2019 18:00, baileypreston311
The diagram below shows the layers of a rock having a trilobite: a rock column labeled rock is shown. the column has three layers. the bottommost layer of the rock has one shaded rhomboid shape, the middle layer has a rhombus with a diagonal along with two identical organisms marked as, trilobite, in the key, the top layer has two semicircles. a key is shown on the right side of the diagram. the shaded rhombus is marked as a, the rhombus with the diagonal is marked as b, the semicircle is marked as c which statement about the rock fossils is true?
Answers: 2
Biology, 23.06.2019 02:30, kyledsmith18
Suppose a dominant allele codes for a big nose and a recessive allele codes for a small nose imagine that an organism receives a dominant allele from its mom and a dominant allele from its dad. what can be determined about its genotype and phenotype?
Answers: 1
Many plant species are "winter annuals" - their seeds germinate in summer, and the plants grow veget...
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