谴责
发表于 2025-3-21 19:11:38
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filial
发表于 2025-3-21 21:22:35
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饶舌的人
发表于 2025-3-22 03:55:01
Function of Autosomeshe discussion of chromosome structure, it is important to learn some basic facts about chromosome function. Structure and function are necessarily closely related. Many structural features are the basis for the function of chromosomes. The genetic units of the chromosomes are the genes. Genes seem t
Offbeat
发表于 2025-3-22 06:00:57
Function of Sex-Chromosomesis why the first chapter was written in such detail and the student is often referred back to it in order to freshen his recollection. The first studies of chromosomes that determine sex were undertaken at the end of the last century. As mentioned in Chapter 1, Henking in 1891 for the first time des
NAG
发表于 2025-3-22 12:12:56
Chromosomes During Meiosis84), Boveri (1890) and Oscar Hertwig (1890). These investigators found that the most important result of fertilization was the fusion of gametes of maternal and paternal origin. Since the nuclei of a particular species maintain their constant chromosome number (2n) from generation to generation, the
NORM
发表于 2025-3-22 14:30:43
Chromosomes During Sexual Reproduction at the chromosomal level, the whole cell is considered carefully. In the last chapter we stated that the processes of genetic recombination in meiosis are: (1) crossing over of chromatid segments during prophase I and (2) random distribution of maternal and paternal chromosome segments during the f
NORM
发表于 2025-3-22 18:23:58
Polyteny and Lampbrush ChromosomesPart III), and movement (Part IV) of the chromosomes. The following parts of the book deal with the variations on the theme: variations in chromosome types (Part V), variations of chromosome structure (Part VI), variation of chromosome number (Part VII), and variation of chromosome function and move
占卜者
发表于 2025-3-22 23:55:28
Ring-Chromosomes, Telocentric Chromosomes, Isochromosomes, and B Chromosomes term. We very often have a certain concept of things, and whatever deviates from this concept we call “unusual”. Because . differ from the majority of chromosomes in humans, animals and plants, they are considered unusual. But apparently, in some instances, such chromosomes fulfill a need that cann
hemorrhage
发表于 2025-3-23 03:21:42
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Cumulus
发表于 2025-3-23 05:41:32
Chromosome Inversions41). During the discussion of chromosome duplications, we saw that chromosome segments can be separated from their mother chromosome by breaks and then can be reinserted into another homologous chromosome in the reverse order (reverse tandem duplications; Chapter 12). If no duplication is involved i