DIFFERENT CHROMOMERE NUMBERS AT MEIOSIS AND MITOSIS IN ORNITHOGALUM
نویسندگان
چکیده
منابع مشابه
Mitosis and Meiosis
Introduction As we discussed in class, biological growth is a multi-dimensional phenomena. In essence, the basic unit of life, the cell, must duplicate itself. One "mother" cell must become two "daughter" cells, through the process of Cell Division, mostly MITOSIS. This is a completely asexual event and involves replication of the nucleus and its constituents and dividing up of the cytoplasm, t...
متن کاملCdk1 drives meiosis and mitosis through two different mechanisms
Cell cycle progression in mammals involves multiple cyclin-dependent kinases (Cdks). Mice lacking Cdk2, Cdk3, Cdk4 or Cdk6 are viable, however, because Cdk1 can compensate for their loss by forming active complexes with A-, B-, Eand D-type cyclins in a stepwise manner. Thus, these Cdks are not essential for the mammalian cell cycle. In contrast, homozygous deletion of Cdk1 causes early embryoni...
متن کاملTurning Meiosis into Mitosis
Apomixis, or asexual clonal reproduction through seeds, is of immense interest due to its potential application in agriculture. One key element of apomixis is apomeiosis, a deregulation of meiosis that results in a mitotic-like division. We isolated and characterised a novel gene that is directly involved in controlling entry into the second meiotic division. By combining a mutation in this gen...
متن کاملDMRT1 at the border between mitosis and meiosis.
I n males, sperm production begins at puberty and lasts throughout reproductive life. This implies that a population of germ stem cells/progenitors must be maintained, amplified and differentiate throughout life to enable the continuous supply of sperm. Spermatogenesis is indeed divided into three phases: a proliferative phase, a meiotic phase and a postmeiotic spermiogenic phase. In the prolif...
متن کاملChromosome segregation in mitosis and meiosis.
A MODEL FOR CHROMOSOME BEHAVIOR DURING MITOSIS AND MEIOSIS .................................... .. The Mitotic Cell Cycle .....................................................................•............................................ Interphase ........................................................................................................................................ . Metaphase ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Hereditas
سال: 2010
ISSN: 0018-0661
DOI: 10.1111/j.1601-5223.1959.tb03063.x