不可侵犯
发表于 2025-3-23 12:39:17
Introduction,h the nucleus and the cytoplasm undergo a number of changes. The highly specialized meiotic process causes an exchange of genetic material between pairs of chromosomes and provides the mature oocyte with half the number of chromosomes characteristic of the somatic cells.
LINES
发表于 2025-3-23 14:36:52
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Filibuster
发表于 2025-3-23 21:26:49
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前面
发表于 2025-3-24 00:23:25
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DNR215
发表于 2025-3-24 02:46:58
Materials and Methods,The present study of the . has covered a period of several years, from 1971 to 1975. The ovaries were obtained from spontaneous or therapeutic abortions of human fetuses aged from 18 to 27 weeks.
温室
发表于 2025-3-24 08:22:39
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专横
发表于 2025-3-24 10:55:57
Terminology,nivalents, bivalents, trivalents, and quadrivalents, respectively. The numerals are followed in parentheses by the chromosomes involved in a rearrangement. Thus, M I, 22, IV (4; 18) indicates a primary oocyte at first metaphase with 22 elements including the XX bivalent and a quadrivalent, consisting of the chromosomes 4 and 18.
AUGER
发表于 2025-3-24 16:21:07
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为宠爱
发表于 2025-3-24 22:24:37
Book 1978ty of diseases was rec ognized as due to numerical chromosome anomalies. There followed the discovery that spontaneous abortions are the result of chromosome errors, and specific band patterns of chromosomes allowed identification of minute lesions. The techniques of cell hybridization now allow sp
Amplify
发表于 2025-3-24 23:18:48
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