lesson three
DESCRIPTION
Lesson Three. Cellular Reproduction: Mitosis and Meiosis. Anaphase [ 5AnE7feiz ] 分裂后期. Pole n. 棒 , 柱 , 杆 , 竿 , 极 , 磁极 , 电极 ;vt. 用竿支撑 , 用棒推 ;vi. 撑篙. Cell plate 细胞板. Centromere 着丝粒. Chromatid 染色单体. Chalone : 抑素. Mammalian [ mA5meiljEn ] : n. 哺乳动物 adj. 哺乳动物的 - PowerPoint PPT PresentationTRANSCRIPT
Chalone : 抑素
Mammalian[]: n. 哺乳动物 adj. 哺乳动物的Homogenate[]: n. 均 匀 混 合 物 ,[ 生 ]( 组织 ) 匀浆Adrenaline[]: n. [ 生化 ] 肾上腺素Corticosteroid[]: n.& adj.[ 生化 ] 皮质甾类 ( 的 ), 皮质类固醇 ( 的 )
Diploid 二倍体 Bi, di, dipl, twi, du, 二,双,两,偶 Bicolor dichromatic twin dual
Haploid 单倍体 Hapl(o)-, mono-, uni-, 单,一,独 Monoxide monoatomic unicellular
Autosome [] n. 正染色体 , 常染色体 Kinetochore [] n.[ 生 ] 动粒 , 着丝粒 ,
着丝点 Either of two submicroscopic attachment points
for chromosomal microtubules, present on each centromere during the process of cell division.
Partition [] n. 分割 , 划分 , 瓜分 , 分开 , 隔离物 ;vt. 区分 , 隔开 , 分割
Pinch [] n. 捏 , 撮 , 收缩 , 紧急关头 , 匮乏 , 压力vt. 掐 , 夹痛 , 修剪 , 勒索 , 使感缺乏 , 使萎缩 , 偷vi. 收缩 , 节省Progeny[] n. 后裔 , 后代Affix a-,an- ( 元音前用 ) 无,非无 asexual;abacterial; amoral
否定 asymmetric;
The cycle is divided into distinct phases: G1 (gap 1) S (synthesis), G2 (gap 2), and M (mitosis). As you can see, mitosis only occupies a fraction of the cycle. The rest of the time-phases G1 through G2—is known as
interphase.
2 The cell cycle
Kinetochore[]n.[ 生 ] 动粒 , 着丝粒 , 着丝点
Either of two submicroscopic attachment points for chromosomal microtubules, present on each
centromere during the process of cell division.
6 Asexual versus sexual reproduction
AsexualNo exchange of genetic materialMitosis
SexualExchange of genetic materialGametesMeiosis