/ Telomerases in eukaryotes are important in A. Transkripsie inisiasie / Initiating transcription B. Ontwinding van supergewinde DNS / Unwinding supercoiled DNA C. Generering van RNS primers / Generating RNA primers D. Beskerm die punte van chromosome tydens replisering / Protecting the ends of chromosomes during replication
Question
/ Telomerases in eukaryotes are important in A. Transkripsie inisiasie / Initiating transcription B. Ontwinding van supergewinde DNS / Unwinding supercoiled DNA C. Generering van RNS primers / Generating RNA primers D. Beskerm die punte van chromosome tydens replisering / Protecting the ends of chromosomes during replication
Solution
Telomerases in eukaryotes are important in D. Protecting the ends of chromosomes during replication.
Telomerases are enzymes that add specific DNA sequence repeats ("TTAGGG" in all vertebrates) to the 3' end of DNA strands in the telomere regions, which are found at the ends of chromosomes. This addition of repeated DNA sequences prevents the degradation of these chromosome ends during DNA replication. Without telomerases, these ends would be lost in each cycle of replication, leading to the loss of important genetic information from the chromosome.
Similar Questions
Initiation of eukaryotic DNA replication A. Kom voor by slegs een oorsprong van replikasie per chromosoom / Occurs at only one origin of replication per chromosome B. Genereer 'n replikasievurk wat net in een rigting beweeg / Generates a replication fork that moves in only one direction C. Begin by streke gemerk met oorsprong herkenningskomplekse (ORC) / Begins at regions marked by origin recognition complexes (ORC) D. Genereer een replikon per chromosoom / Generates one replicon per chromosome
Describe DNA replication in eukaryotes
When the telomerase gene is activated, cell division is blocked. telomere repeats are lost more rapidly. cells commit suicide. chromosomes are restored to their original length.
Match the enzymes to their role in the DNA replication process.RNA primaseligasehelicasepolymerasetopoisomeraseunwinds the DNA moleculesynthesizes the complementary daughter strandssynthesizes RNA primer at the initiation pointcreates nicks ahead of the replication fork to relieve tension from unwindingjoins the Okazaki fragments togetherReset Next
Regulatory proteins can control the initiation of transcription by A. Binding van die DNA in 'n aktiewe toestand om transkripsie te inhibeer / Binding the DNA in an active state to inhibit transcription B. Binding van die DNA in die teenwoordigheid van 'n induseerder molekule om transkripsie toe te laat / Binding the DNA in the presence of an inducer molecule to allow transcription C. Bind die DNA om transkripsie te bevorder tensy 'n inhibeerder teenwoordig is / Binding the DNA to promote transcription unless an inhibitor is present D. Al die bogenoemde / All of the above
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