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In this diagram of a duplicated chromosome, (2) identifies the centromere—the region that joins the two sister chromatids, or each half of the chromosome. In prophase of mitosis, specialized regions on centromeres called kinetochores attach chromosomes to spindle fibers. The centromere links a pair of sister chromatids together during cell ...
A major theme of science fiction and of speculative biology is to convey a message of optimism or pessimism according to the author's worldview. [5] [6] Whereas optimistic visions of technological progress are common enough in hard science fiction, pessimistic views of the future of humanity are far more usual in fiction based on biology. [4]
This is a list of works classified as biopunk, a subgenre of science fiction and derivative of the cyberpunk movement. Some works may only be centered around biotechnologies and not fit a more constrained definition of biopunk which may include additional cyberpunk or postcyberpunk elements.
Biopunk (a portmanteau of "biotechnology" or "biology" and "punk") is a subgenre of science fiction that focuses on biotechnology. It is derived from cyberpunk, but focuses on the implications of biotechnology rather than mechanical cyberware and information technology. [1] Biopunk is concerned with synthetic biology.
The monocentric chromosome is a chromosome that has only one centromere in a chromosome and forms a narrow constriction. Monocentric centromeres are the most common structure on highly repetitive DNA in plants and animals.
During cell division, the identical copies (called a "sister chromatid pair") are joined at the region called the centromere (2). Once the paired sister chromatids have separated from one another (in the anaphase of mitosis) each is known as a daughter chromosome. The short arm of the right chromatid (3), and the long arm of the right chromatid ...
Centromere protein A, also known as CENPA, is a protein which in humans is encoded by the CENPA gene. [5] CENPA is a histone H3 variant which is the critical factor determining the kinetochore position(s) on each chromosome [ 6 ] in most eukaryotes including humans.
In cell biology, the centrosome (Latin centrum 'center' + Greek sōma 'body') (archaically cytocentre [1]) is an organelle that serves as the main microtubule organizing center (MTOC) of the animal cell, as well as a regulator of cell-cycle progression. The centrosome provides structure for the cell.