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Irina-Kira [14]
2 years ago
8

Nucleotides can be radiolabeled before they are incorporated into newly forming dna and can therefore be assayed to track their

incorporation into dna. In a set of experiments, a student research team used labeled thymidine nucleotides and introduced these into a culture of dividing human cells. Which of the following questions might be answered by such a method?.
SAT
1 answer:
Mars2501 [29]2 years ago
3 0

Answer:

The four nitrogenous bases that are present in DNA are adenine, guanine, thymine and cytosine. These nucleotides can be radiolabelled before the new DNA forms and the composition of specific nucleotide of DNA can be estimated.

During the experiment, research team found that the incorporation of radioactive nucleotides composition increase after the introduction of pathogen in the culture. This means that the cell starts producing more number of cell to fight against the pathogen. The infection of pathogen is mainly responsible for the division of lymphocytes more rapidly.

Explanation:

Brainliest please

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There are 1,663,200 different permutations.

<h3>How many different permutations can be made?</h3>

First, we need to count the number of different elements in the word independence.

We have 6 different letters.

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For a total of 12 letters. The different number of permutations is given by the factorial of the total number of elements (12) divided by the factorials of the number of repetitions of all the elements. Then we have:

P = \frac{12!}{1!*3!*4!*2!*1!*1!} = \frac{12!}{3!*4!*2!} = \frac{12*11*10*9*8*7*6*5}{3*2*2} = 1,663,200

So there are 1,663,200 different permutations.

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2 years ago
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There are three species of tahrs, which are native to Asia: Arabian tahr, Nilgiri tahr and Himalayan tahr.

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