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[11] Due to population density, dispersal may relieve pressure for resources in an ecosystem, and competition for these resources may be a selection factor for dispersal mechanisms. Dispersal of organisms is a critical process for understanding both geographic isolation in evolution through gene flow and the broad patterns of current geographic ...
Ochna integerrima, [1] popularly called yellow Mai flower (Vietnamese: mai vàng, hoa mai, hoàng mai in southern Vietnam, although in the north, mai usually refers to Prunus mume), is a plant species in the genus Ochna (/ ˈ ɒ k n ə /) and family Ochnaceae. In the wild, it is a small tree or shrub species (2-7 m tall).
Palindrome of DNA structure A: Palindrome, B: Loop, C: Stem A palindromic sequence is a nucleic acid sequence in a double-stranded DNA or RNA molecule whereby reading in a certain direction (e.g. 5' to 3') on one strand is identical to the sequence in the same direction (e.g. 5' to 3') on the complementary strand.
[1] This course is designed for students who wish to pursue an interest in the life sciences. The College Board recommends successful completion of high school biology and high school chemistry [ 2 ] before commencing AP Biology, although the actual prerequisites vary from school to school and from state to state.
A cell is the basic unit of life that is responsible for the living and functioning of organisms. [3] Cell biology is the study of the structural and functional units of cells. Cell biology encompasses both prokaryotic and eukaryotic cells and has many subtopics which may include the study of cell metabolism , cell communication , cell cycle ...
Biology is the science of life. It spans multiple levels from biomolecules and cells to organisms and populations. Biology is the scientific study of life. [1] [2] [3] It is a natural science with a broad scope but has several unifying themes that tie it together as a single, coherent field.
Core promoters combined with general transcription factors are sufficient to direct transcription initiation, but generally have low basal activity. [7] Other important cis-regulatory modules are localized in DNA regions that are distant from the transcription start sites. These include enhancers, silencers, insulators and tethering elements. [8]
Among the many-celled groups are animals and plants. The number of cells in these groups vary with species; it has been estimated that the human body contains around 37 trillion (3.72×10 13) cells, [7] and more recent studies put this number at around 30 trillion (~36 trillion cells in the male, ~28 trillion in the female). [8]