해피레포트 - 체세포분열과 감수분열[영어로]

카테고리 : 레포트 > 의학계열 파일이름 :체세포분열과 감수분열[영어로].hwp 문서분량 : 7 page 등록인 : leewk2547 문서뷰어 : 한글뷰어프로그램 등록/수정일 : 12.05.25 / 12.05.25 구매평가 : 다운로드수 : 0 판매가격 : 1,500 원

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보고서설명
Cell division is the process by which a parent cell divides into two or more daughter cells. Cell arise only from preexisting cells. Cell division plays several important roles in the live of organism. Cell division on large scale allows some multicellular organism reproduce asexually (such as plants that grow from cuttings.) Among sexually reproducing organisms, cell division is the basic of sperm and egg formation.

본문일부/목차
The process of cell division is a key component of the cell cycle, an ordered sequence of events that estends from the time a cell is first formed from a dividing parent cell untill its own division into two cells. ⅰ) interphase Most of the cell cycle is spent in interphase. This time when a cells metabolic activity is very high and the cell performs its various functions within the organism. Moreover, a cell in iterphasse increases its supply of proteins, creates more cytoplasmic organelles, and grows in size. additionally, the chromosomes duplicate during this period. Typically, interphases lasts fot at least 90% of the total time required for the cell cycle. - G1 (Gap 1) - S (synthesis) - G2 (Gap 2) ⅱ) mitopic phase (M phase) The part of the cell cycle when the cell actually divides, accounts for only about 10% of the total time required for the cell cycle. The mitotic phase is divided into two stage, called mitosis and cytokinesis, although the second stage begins before the first one end. 2. Types of cell division Prokaryotes reproduce by a type of cell division ccalled binary fission. In typical prokaryotes, most genes are carried on a circular DNA molecule that, associated protein, constitutes the organisms single chromosome. Although prokayotic chromosomes are much smaller than those of eukaryotes, duplicating them in an orderly fashion and distributing the copies equally to two daughter bacteria is still a formidable task.

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체세포분열과 감수분열[영어로]