Question

after the due date and time Describe what Meselson and Stahl would have observed after 3 rounds of replication IF DNA replication was dispersive. (1 point) All the DNA would have a heavy density. All of the DNA would have a density that falls between between intermediate and light density of the DNA would have a light density and 4 would have an intermediate density. 3/4 of the DNA would have a heavy density and % would have intermediate density. %of the DNA will have a heavy density and % will have a light density of the DNA will have a heavy density and % will have a light density 2 What type of activity is used during DNA synthesis in prokaryotes to remove an RNA primer? (0.5 point) a3' to 5' endonuclease activity hS' to 3' endonuclease activity c.3' to 5' exonuclease activity 5 to 3 exonuclease activity polymerase activity 3. The diagram below represents a replication bubble in a prokaryotic chromosome. The vertical line located in the center of the bubble represents the replication origin. Indicate which of the regions of template strands (A, B, C, and/or D) would have Okazaki fragments?. (1 point) A and C B and D A and D dB and C A, B, C, and D 3 5 D Human chromosome 13 consists of approximately 115 million base pairs. Approximately how many origins of replication are associated with chromosome 13? ( point) 1.2 million 100,000 25,000 41150 543 115 Which of the following best describes the function of telomerase? ( point) DNA dependent DNA synthesis RNA dependent DNA synthesis DNA dependent RNA synthesis RNA dependent RNA synthesis 6 Replication of a prokaryotic chromosome is often refermred to as (0.5 point) Ori replication

Help with 1-6 please??

Answer 1

1.option b) is right choice of this question as in disruptive type of replication all DNA some parts are conserved and some are not. So all the DNA molecules will have each stand made of some N¹⁴ part and some N¹⁵​ part. So all DNA molecules of daughter will have same density and fall in intemediate and light density. All other option will automatically cancelled.

2) In the prokaryotes to remove RNA primer from lagging strand DNA polymerase I have 5' to 3' exonuclease activity. So option d) is correct choice of the question.

3) Okkazaki fragments will be formed on lagging strand on A and c .Your diagram is not clear. So i have problem in answering because i could not find where is A,B,C and D. But i can clear you that strand which will be formed complentary to upper strand of bubble will have Okkazaki fragments.

4) Eukaryotic have a origin of replication having a size of approximately 100kb . Chromosome 13 have 115 million base pairs that is equal to 115000 killobasepairs.

Therefore approximate number of replication origins= 115000/100= approx 1150

so option d) is correct option of this question.

5) Telomerase enzyme are used to replicate the ends of chromosome. for this they use RNA template. So the best description of their function is RNA dependent DNA synthesis that means option b) is correct choice of question.

6) Replication of prokaryotes is often referred to as theta form of replication as theta like structure is formed during their replication. So option c) theta replication is correct choice of the question.