DNA Molecule: How DNA is Packaged (Basic) DNA Molecule: How DNA is Packaged (Basic) DNA packaging.
Each chromosome consists of one continuous thread-like molecule of DNA coiled tightly around proteins, and contains a portion of the 6,400,000,000 basepairs (DNA building blocks) that make up your DNA. The way DNA is packaged into chromatin is a factor in how protein production is controlled. Duration: 1 minutes, 30 seconds Transcript: In this animation we'll see the remarkable way our DNA is tightly packed up so that six feet of this long molecule fits into the microscopic nucleus of every cell.
Chemistry 3B - Lecture 1. 500 Free Online Courses from Top Universities. Advertisment Take online courses from the world’s top universities for free.
Below, you will find 1,700 free online courses from universities like Yale, MIT, Harvard, Oxford and more. Stem Cell Basics. This primer on stem cells is intended for anyone who wishes to learn more about the biological properties of stem cells, the important questions about stem cells that are the focus of scientific research, and the potential use of stem cells in research and in treating disease.
The primer includes information about stem cells derived from embryonic and non-embryonic tissues. Much of the information included here is about stem cells derived from human tissues, but some studies of animal-derived stem cells are also described. The NIH developed this primer to help readers understand the answers to questions such as: What are stem cells?