有丝分裂(mitosis and meiosis) 主要指体细胞的繁殖方式,DNA 分子及相关的蛋白经过复制后平均分配到两个子细胞中;包含两个紧密相连的过程:核分裂和 质分裂。即细胞分裂为二,各含有一个核。分裂过程包括四个时期:前期、中期、后期、末期。在 分裂过程中经过染色体有规律的和准确的分裂,而且在分裂中有纺锤丝的出现,故称有丝分裂。...
During metaphase of meiosis II, chromosomes align at the metaphase plate, similar to metaphase in mitosis. Each chromosome consists of two sister chromatids, and the spindle fibers attach to the centromeres. This stage is critical for understanding the distribution of gen...
Mitosis produces two genetically identical diploid daughter cells through one division, occurring in somatic cells for growth and repair. Meiosis produces four genetically diverse haploid gametes through two divisions, involving crossing over and independent assortment, occurring in germ cells for sexual rep...
Question Answers for Class 11 Biology by Vedantu are created by experts to help you excel in your board exams. These answers cover all the key questions from the CBSE Biology syllabus and explain every concept in a simple and easy-to-understand way....
“What is the difference between mitosis and meiosis? SubjectBiology 3Answers 0Votes question asked by Ashfeen | 7 years ago “Name a type of bond formed when two glucose molecule polymerise forming disaccharide molecule. SubjectBiochemistry 3Answers 0Votes question asked by Pooja | 7 years ago...
Cell division: Cell cycle, mitosis, meiosisand their significance. Unit 4 Plant PhysiologyPhotosynthesisRespirationPlant growth and Development Transport in plants: Movement of water,gases and nutrients, Cell to cell transport –Diffusion, active transport; Plant – waterrelations – Imbibition, water ...
(a)(mitosis) chromosome numbermaintained 1 diploid AW +(meiosis) chromosome numberhalved / haploid AW;(mitosis) identical offspring /clones + (meiosis) to producenon-identical gametes / sexcells / any gamete correctlynamed;(mitosis) e.g. of where it occurs- plant or animal / in bacteria;gro...
Meiosis I:--results in homologous chromosomes being separated--generates haploid daughter cells--> known as "Reductional Division"Meiosis II:--Results in the separation of sister chromatids (similar to mitosis)-- called "equatorial division" Meiosis I vs. Mitosis II ploidy is cut in half during...
So to qualify the CSE exam one must have the knowledge and a basic understanding of every field. The final selection of the IAS exam is based on the main exam and the interview. Union Public Service Commission conducts the Civil Services examination for the recruitment of candidates to ...
affect sensation to low threshold stimuli below the level of injury on the ipsilateral side of the body not have any affect upon motor or sensory pathways Mitosis is divided into stages which occur in the following order: a. Anaphase Metaphase Prophase Telophase ...