aResearchers say that sometimes parts of a chromosome can be duplicated or not be there at all .then there can be too many copies of a gene or too few.So a gene might either work too well or not well enough. 研究员说有时分开染色体能被复制或不那里在那里所有.then可以是基因或很少的许多...
The structure of a chromosome can be based on the position of the centromere. These include metacentric (center), telocentric (extreme end), and acrocentric (two-thirds from one end). What are the parts of a chromosome? The significant parts of a chromosome are the centromere, telomeres, an...
Having smaller than usual testicles may or may not be a sign of a fertility issue. It is true that some conditions such as Klinefelter syndrome or Y chromosome microdeletions may result in this, but the correct studies and tests would need to be done. You can find out more about this con...
2.chromosome3.homologous pairs4.(sister) chromatid5.tetrad6.explain the random assortment of chromosomes while in meiosisI know all the rest of the phases,so please don't waste time explaining the process of those phases,keep to the essentials,thanks!
Through the use of small atelic fragments derived from T (1; 4) A, B S the right arm of the X chromosome of D. melanogaster has been demonstrated.The proximal portion of XR is a non-chromatic or ghost reversed repeat of the proximal portion of XL.Polytene X chromosomes show no ...
Specific chromosome domains in interphase nuclei of neurons and glia were studied by three-dimensional (3-D) reconstruction of serial optical sections from... L Manuelidis,J Borden - 《Chromosoma》 被引量: 510发表: 1988年 Locating transcribed and non-transcribed rDNA spacer sequences within the...
It starts with an initial set of random solutions called population (i.e., routing paths) from the source to the destination nodes. Each individual in the population is called a chromosome. A chromosome is the e 基因算法 (GA) 是看齐自然选择机制的一个随机搜索算法。 它开始以称人口的最初的...
a交货时间: Delivery time:[translate] aMitotic chromosome analyses were conducted with the 5 LDN-DS lines — 4D(4A), 5D(5A), 5D(5B), 3D(3B), and 6D(6B) — that contain monosome 4A, 5A, and 5B, or telosome 3BL and 6BS, respectively. The 5D(5B) and 6D(6B) plants both with...
Summary. The case is presented of an infant who was diagnosed clinically as trisomy 18 with pseudohermaphroditism. Cytogenetic studies revealed an extra chro- mosome which represented a transloca- tion chromosome derived from a balanced, reciprocal translocation between chromo- somes 16 and 18: [der...
The nature of the effect of fractionated X irradiation of meristematic cells. Irradiation of Vicia faba roots with 400 r. 90 min. before irradiation with 100, 200 or 300 r. produced less chromosome aberrations than application of the... VP Paribok,GF Krupnova - 《Citologija》 被引量: 0发...