Which is the best example of genetic engineering?

1 answer:

6 0

1. The appropriate response is the second one. It is the immediate control of a life form's genome utilizing biotechnology. It is an arrangement of advances used to change the hereditary cosmetics of cells, including the exchange of qualities inside and crosswise over species limits to create enhanced or novel living beings.
2. The appropriate response is the first. New DNA is gotten by either secluding and replicating the hereditary material of enthusiasm utilizing sub-atomic cloning techniques or by falsely integrating the DNA

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What is the relative atomic mass of a hypothetical element that consists isotopes in the indicated natural abundances

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The given question is incomplete. The complete question is:What is the relative atomic mass of a hypothetical element that consists isotopes in the indicated natural abundances.

Isotope mass amu Relative abundance

1 77.9 14.4

2 81.9 14.3

3 85.9 71.3

Express your answer to three significant figures and include the appropriate units.

Answer: 84.2 amu

Explanation:

Mass of isotope 1 = 77.9

% abundance of isotope 1 = 14.4% = $\frac{14.4}{100}=0.144$

Mass of isotope 2 = 81.9

% abundance of isotope 2 = 14.3% = $\frac{14.3}{100}=0.143$

Mass of isotope 3 = 85.9

% abundance of isotope 2 = 71.3% = $\frac{71.3}{100}=0.713$

Formula used for average atomic mass of an element :

$\text{ Average atomic mass of an element}=\sum(\text{atomic mass of an isotopes}\times {{\text { fractional abundance}})$

$A=\sum[(77.9\times 0.144)+(81.9\times 0.143)+(85.9\times 0.713)]$

$A=84.2amu$

Therefore, the average atomic mass of a hypothetical element that consists isotopes in the indicated natural abundances is 84.2 amu

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