All the trillions of cells in our body share the same genetic information and are derived from a single, fertilized egg. When this initial cell multiplies during fetal development, its daughter cells become more and more ...
Cell & Microbiology
Jan 30, 2018
0
210
To Tom Santangelo, single-celled microorganisms called archaea are like ancient mariners, surviving among the most extreme conditions on Earth, including volcanic vents in the deep ocean.
Cell & Microbiology
Nov 8, 2017
0
108
Characteristics passed between generations are not decided solely by DNA, but can be brought about by other material in cells, new research shows.
Biotechnology
Apr 2, 2015
14
2866
Every cell in our body has exactly the same DNA, yet every cell is different. A cell's identity is determined by the subset of genes that it activates. But how does a cell know which genes to turn off and which to turn on? ...
Biotechnology
Mar 13, 2014
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1
(Phys.org) —Last month, researchers reported the creation of the first primitive brain-like structures made from human stem cells. To create the complex morphology of these cerebral organoids, cells within a proliferating ...
(Phys.org) —The ability of a cell to move, replicate, and recast itself according to the needs of the organism which it serves, comes at it price. The extreme flexibility of cells takes its origin from the constant turnover ...
Scientists at Penn State University have achieved a major milestone in the attempt to assemble, in a test tube, entire chromosomes from their component parts. The achievement reveals the process a cell uses to package the ...
Cell & Microbiology
May 19, 2011
0
0
Chromatin is a unique DNA and protein complex that makes up the chromosomes. Specific proteins (histones) wind up the DNA like small cable drums to package the long DNA. A cable drum (consisting of four pairs of histones) ...
Plants & Animals
Feb 23, 2024
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58
When organisms pass their genes on to future generations, they include more than the code spelled out in DNA. Some also pass along chemical markers that instruct cells how to use that code. The passage of these markers to ...
Plants & Animals
Aug 28, 2023
0
13
New research provides insight into how an enzyme that helps regulate aging and other metabolic processes accesses our genetic material to modulate gene expression within the cell. A team led by Penn State researchers have ...
Cell & Microbiology
Apr 14, 2023
0
97
