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How does the Meselson and Stahl Experiment provide evidence for the semi conservative theory of DNA replication?

Before we start on the specifics of the experiment itself we need to understand how DNA replication occurs on a molecular level. DNA is made up of four different bases; A, C, G and T....

JD
Answered by Julia D. Biology tutor
26686 Views

How should I structure and plan a Section B question? (Edexcel)

With the Section B questions you will be asked to engage with a set of sources that are related to a historical debate relevant to your course. Before jumping straight into answering the question though y...

CM
Answered by Charlie M. History tutor
14128 Views

Why do you use the subjunctive after 'quiero que'?

It should be said that it is not always trigged by that construction, since the subjunctive only follows this clause if there is a change in subject (i.e. quiero que tu hagas/usted haga/él haga/ella haga/...

ZL
Answered by Zac L. Spanish tutor
3477 Views

What do you do if there is a subjunctive trigger that is followed by the imperfect tense?

There is in fact an imperfect subjunctive, however it is rarely used and can only normally be found in technical pieces of literature or criticism. As a result, the present subjunctive is what would be ne...

ZL
Answered by Zac L. French tutor
2623 Views

What is Unemployment?

Unemployment is the number of people that do not have a job, but have been actively searching for a job for at least 4 weeks. The unemployment rate can be calculated by dividing the number of people unemp...

SS
Answered by Sonam S. Economics tutor
3056 Views

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