Prokaryotes are thought to be examples of some of the earliest forms of life to exist on the planet. Their internal structures are much less organized and defined than those of eukaryotes who developed later.Answer and Explanation: Eukaryotes have both introns and exons in their DNA. This ...
Why do reticulocytes have ribosomal RNA? Which of the following enclose their DNA in a nucleus? a. prokaryotes b. bacteria c. eukaryotes d. viruses What are operons in eukaryotes? In a eukaryotic cell, RNA polymerase enzymes are synthesized in the a) mitochondria, by mitochondrial ribosomes....
真核生物基因表达的调控(Regulation of gene expression in eukaryotes) 热度: GeneRegulation--TheLacOperon Specificproteinsarepresentindifferenttissuesandsomeappearonlyatcertaintimesduring development. Allcellsofahigherorganismhavethefullsetofgenes: Carrotsregeneratedfromphloemcellsinthe1950s ...
InEukaryotes, –Eachgenehasitsowntranscriptionalcontrol(nooperons) –mRNAisprocessedbeforetranslation EukaryoticGenes Eukaryoticgenesdividedbylong intergenicregions Theyarealsointerruptedbylong regionsofnon-codingsequence calledintrons. Eachcontiguousportionofacoding ...
How does the nucleus control which proteins are made by the ribosomes? Do prokaryotes have exons? How are ribosomes involved in protein synthesis? How do nucleotides get into the nucleus? What did eukaryotes most likely evolve from? How mRNA is transported out of the nucleus?
replication fork, while eukaryotes have multiple forks. Since the DNA strands are antiparallel, and replication proceeds in the 5' to 3' direction on EACH strand, one strand will form a continuous copy. The top strand here…. The Lagging Strand ...
Why do humans have introns? Why are introns only in eukaryotic DNA? Do bacteria have double-stranded RNA? Do archaea have single-stranded DNA? Does a retrovirus have a genome made of RNA? Do viruses have ribosomal RNA? What are operons in eukaryotes? Do helminths have DNA? Does eukaryotic...
(1) No operon structure. Some of the general methods used to control expression in prokaryotes are used in eukaryotes, but nothing resembling operons is known. (2) No (or few) instances of multigenic mRNA. Coordinately regulated genes usually are dispersed. ...
3.A.2 In eukaryotes, heritable information is passed to the next generation via processes that include the cell cycle and mitosis, or meiosis plus fertilization. 10.1-6, 11.1-4 Mitosis promoting factor (MPF) Action of platelet-derived growth factor...
Classi,cation of ABCF sequences The 810 amino acid sequence encoding human ABCF1 (ABC50)was employed as the Psi-Blast search query to identify other ABCF members. Sequence ho-mologues in the ABCF family were identi,ed in eu-bacteria, and other eukaryotes, although none was identi,ed in...