Chromatin is composed of DNA and histones that are packaged into thin, stringy fibers. These chromatin fibers are not condensed but can exist in either a compact form (heterochromatin) or less compact form (euchromatin). Processes including DNA replication, transcription, and recombination occur in ...
Chromatids are produced fromchromatinfibers during both meiosis and mitosis. Chromatin is composed ofDNAand skeletalproteinsand is called a nucleosome when wrapped around these proteins in sequence. Even more tightly wound nucleosomes are called chromatin fibers. Chromatin condenses DNA enough to fit w...
What is the role of a phosphate group in a strand of DNA? Basic structure of DNA or deoxyribonucleic acid: A nucleotide is the basic of polynucleotide chain of DNA and each nucleotide is composed of three components - i) a nitrogenous base, ii) a pentose sugar and iii) a phosphate grou...
aThis system is mainly composed of a dehumidifier, a regenerator, an indirect evaporative cooler and a direct evaporative cooler. 这个系统由抽湿机、热交流器、一台间接蒸发冷却器和一台直接蒸发冷却器主要组成。 [translate] a提拉米苏芝士蛋糕 Rowing motion rice Soviet cheese cake [translate] athe ...
(eight subunits in all). This octamer serves as a spool of sorts for the DNA double helix to wrap itself around twice, like thread. This structure, the octamer plus the DNA wrapped around it, is called a nucleosome. When a chromosome is partially unwound into a strand called a chromatid...
NucleosomesEnhancerPromoterThe human genome (see Box 1.1) is composed of some 20,000 protein-coding genes and approximately the same number of genes for non-coding RNAs (ncRNAs), being used as a structural backbone of ribosomes (ribosomal RNA (rRNAs)), adaptor molecules in protein translation...
Duggan, R. Belotserkovskaya, L.A. Pacella, F. Winston, J.L. Workman, S.L. Berger Functional organization of the yeast SAGA complex: distinct components involved in structural integrity, nucleosome acetylation, and TATA-binding protein interaction Mol. Cell. Biol., 19 (1999), pp. 86-98 ...
Helicase enzyme deals with unwinding of DNA helix for replication, the ribozyme is catalytic RNA, and transfer RNA carries appropriate amino acid for protein synthesis. Answer and Explanation: Become a member and unlock all Study A...
pseudonana as models is the absence of known sexual reproduction in these species, which is reflected in the fact that their sizes do not decrease with time. Indeed, due to the rigid frustule being composed of two valves of definite unequal sizes (the larger epivalve and the smaller hypo...
The first step of chromatin formation involves the DNA wrapping around a core of eight histones to create a nucleosome (Figure 1). These bead-like structures will coil and condense even further to allow for very efficient packaging of DNA [50]. Figure 1. Main types of epigenetic ...