Word: celling
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Dates: during 1960-1969
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...that J. D. Watson and company have outlined their construction manual for DNA (deoxribonucleic acid), the carrier of genetic information for all cells, many scientists agree that the best target for further research is RNA (ribonucleic acid). The cell copies specific genetic instructions from the DNA into RNA and then transports the RNA from the nucleus to the cytolpasm. It has not yet been determined how the cell chooses which information to copy and how the RNA is transmitted...
Fotis C. Kafatos, assistant professor of Biology and popular lecturer in Biology 15b, has spent the last two years investigating the cellular and molecular aspects of cell differentiation (how the cell decides what role it will play). Kafatos, a 28-year-old Greek citizen, has already published a dozen scientific communications which have received international attention. The editors of Nature cited his scientific promise and the crucial nature of his work in a rare burst of praise in the May, 1967, issue. Born in Crete, he came to America immediately after high school and enrolled at Cornell University. He finished...
...answers Kafatos found in this project eventually presented him with a tailor-made system in which to pursue his old interest in cell differentiation. Through other scientists' research he found that different species of moths had various means of escaping from their cocoons. He found that, for example, one Australian species has a hard, pointed structure at the front of its head that it uses as a saw and that the caterpillar of one kind of silk moth leaves an exit hole when it builds the cocoon. The species Kafatos chose to work with, the Chinese Oak Silk Moth, however...
Puzzled by the changing function of the moth's old silk tubes and fascinated by the process which commits cells to their various fates, Kafatos turned to developmental biology on the cellular level. He presents his own findings in this field in two lectures in his course. He often involves his undergraduates, as well as his graduate students, in his projects. Kafatos is investigating both how cells become specialized and how they sometimes change from one specific function to another. These questions are crucial for man's understanding of the cell's nature. Furthermore, since cancerous cells are previously normal...
...Cell Theory, formulated in 1839, states that all living matter is composed of cells, which are made up of nuclei and cytoplasm. In the last two decades scientists have found that DNA, a long double--chained molecule found in the nucleus, carries the cell's genetic information. This information is the blueprint that describes how the working parts of the cell, the proteins, should be assembled from 20 building blocks, the amino acids. Thus DNA ultimately determines the cell's function. The DNA's information is transferred to RNA (the cell's working manual), which is chemically like DNA except...