1. Man-made Genetic Instructions Yield Living Cells for the First Time
(Category/DNA News)

... cells starting from this digitized information….We refer to the cell we have created as being a synthetic cell because it is a cell controlled by a genome assembled from chemically synthesized pieces ...

2. Paternity Test - Comparative DNA Testing
(Category/DNA Testing)

... having an affair. Apparently she had produced two egg cells that month, and each was fertilized by a different man's sperm. During the late 1980s, research evidence indicated that DNA could be extracted ...

3. Polymerase Chain Reaction - PCR
(Category/DNA Testing)

... in Chemistry in 1993). It allows the DNA technologist to reproduce a single strand of DNA to a billion identical copies in a few hours. (A cancer cell, known for its high reproductive ability, would require ...

4. DNA Analysis and Diagnosis
(Category/DNA Testing)

... of DNA within a morass of cellular material and signals when the fragment has been located. Tracking down a gene or set of genes can be a formidable task when one considers the size of the human genome: ...

5. Forensic DNA Typing
(Category/DNA Testing)

... DNA typing, DNA profiling, or DNA patterning. The acronym DNA is short for deoxyribonucleic acid, the name given to a group of molecules that occur in all cells of all living organisms and that carry ...

6. Genetic Technology
(Category/Genetics)

... from an udder cell of an adult sheep. This nucleus was then implanted into another cell that had its nucleus removed. In order to make this recombined cell start to divide, researchers had to apply chemicals ...

7. Genetic Testing
(Category/Genetics)

... fibrosis, Tay-Sachs, sickle cell, and many of the other genetic diseases, a simple blood test is all that is needed to detect the mutated gene. This is called preconception genetic testing and counseling. ...

8. Inherited Conditions
(Category/Genetics)

... was identified in 1989. It is found on chromosome 7 and controls the fl ow of chlorine in and out of certain cells. Th e normal CFTR gene is about 250,000 base pairs long. In 70% of cystic fibrosis cases, ...

9. Genetic Mutations and Cancer
(Category/Genetics)

All cancers are caused by a change in DNA, but most cancers are not hereditary. If genetic mutations occur that damage the way cells regulate their growth and death, cancer can be the result. Oncogenes ...

10. Other Chromosomal Abnormalities
(Category/Genetics)

... missing part of the chromosome only have one copy instead of two inside the cell. Cri du chat syndrome, for example, is the result of a partial monosomy. Cri du chat is caused by a deletion of a part of ...

11. Down Syndrome - Nondisjunction During Meiosis
(Category/Genetics)

... off). All her cells, thereafter, will have the same X inactivated in every cell. This effectively makes every female have only one copy of the hundreds of genes that lie on the X chromosome, just like ...

12. Passing Genes to the Next Generation
(Category/Genetics)

... do cells use the DNA molecule? Cracking The Code In order for cells to use the instructions contained in the DNA molecule to make proteins, the instructions need to be transferred ...

13. Chromosome Theory of Heredity
(Category/Genetics)

... blood cells that he obtained from the pus-filled bandages of wounded soldiers in a local hospital. During these experiments, Miescher added some chemicals to the white blood cells, which resulted in the ...

14. Early Ideas about Heredity
(Category/Genetics)

... things arise from interactions between cells. This idea helped to dispel a popular notion that had been around since the time of Aristotle—the theory of spontaneous generation. People, including scientists, ...

15. Fossil Avian Eggshell Preserves Ancient DNA
(Category/DNA News)

... from eggshell obtained from New Zealand (extinct moa and ducks), Madagascar (extinct elephant birds) and Australia (emu and owl). Our data demonstrate excellent preservation of the nucleic acids, evidenced ...

16. Genes and Chromosomes
(Category/DNA Structure)

Cells are the basic building blocks of all living things. There are trillions of cells in the human body, almost all of which contain a chemical molecule that carries hereditary material. This chemical ...

17. Rosalind Franklin
(Category/DNA Structure)

... working with crystallographer Jacques Mering. In 1951, she accepted an offer to join a team of scientists studying cells at the King’s College Biophysical Laboratory in London. Franklin, trained as a chemist, ...

18. Watson and Crick
(Category/DNA Structure)

... an excellent place to pursue that study would be the Cavendish Laboratory, in the university town of Cambridge, England. That laboratory had an unmatched ability to use X-ray pictures to determine the ...

19. DNA Encyclopedia
(Uncategorised Content)

... of DNA might explain how the molecule functions in the hereditary process; and second, understanding DNA's structure might shed light on how the molecule duplicates during cellular reproduction. Both heredity ...

20. About DNA Encyclopedia
(Uncategorised Content)

... that genes control heredity by specifying the production of proteins. But even the gene basis of heredity was hard to believe because the amount of nucleic acid in the cell seemed insignificant. The gene ...