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arsen [322]
2 years ago
6

Because it has no introns, researchers prefer to use ____ when working with human genes.

Biology
1 answer:
pochemuha2 years ago
5 0
The correct answer is d: cDNA.  
<span>cDNA or complementary DNA is DNA synthesized usually from messenger RNA (mRNA) by the enzyme reverse transcriptase. Because this molecule is from mRNA it contains only exons. cDNA is also produced naturally by retroviruses, for example, HIV virus.</span>
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A carbon sink is a place where carbon Select one: a. is stored after removal from the atmosphere. b. is released after cellular
sashaice [31]

Answer:

A. is stored after removal from the atmosphere

Explanation:

A carbon sink is a place where carbon is stored after removal from the atmosphere. Carbon is stored in a carbon sink when they are removed from the atmosphere.

A carbon sink are reservoir (usually natural) where carbon is stored. Carbon sink store carbon because of their ability to absorb more carbon. Examples of carbon sinks are plants and water. Plants and water has the capability to absorb more quantity of carbon from the atmosphere and release less quantity of carbon.

Carbon is a chemical elements represented by the symbol C. It has the atomic number 6 and belongs to group 14 of the periodic table.

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3 years ago
________ is typically formed by metamorphism of a sandstone. ________ is typically formed by metamorphism of a sandstone. Quartz
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Answer:

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3 years ago
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(b) Identify the dependent variable in the experiments. Identify a control group missing from the second experiment. Justify the
hammer [34]

Hello. You have not submitted the experiments to which this question refers, which makes it impossible for it to be answered. However, I will try to help you in the best possible way.

A dependent variable is one that is influenced by an element, in order to present a result, that is, it is a variable that does not establish itself, being dependent on another variable to establish itself. An example of a dependent variable can be seen in an experiment that seeks to determine the differences in growth rates of bean plants that were fertilized with different organic fertilizers. As you can see, this is an experiment where the different organic fertilizers influence differences in the growth rate of bean plants. Thus, the growth of these plants depends on the fertilizer, this growth being the variable dependent on the experiment.

A control group, in turn, is an element of the experiment that does not receive the element that is being tested in the same experiment. The control group is important, because it allows the researcher to see the results of a system where the tested element does not exist, thus being able to determine the real differences that the tested element is capable of causing. Using the same example presented in the paragraph above, we can see that the different organic fertilizers are the elements tested in the experiment. These fertilizers will be applied to the plants, however it is important that at least one of these plants does not receive any fertilizer, so that the difference between a system with fertilizer and a system without fertilizer can be evaluated. This plant that received no fertilizer is the control group.

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2 years ago
How are conditions of pressure and temperature, at which two phases coexist in equilibrium, shown on a phase diagram?
hammer [34]
On the phase diagram, conditions of pressure and temperature, at which two phases coexist in equilibrium are separated by a line.
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3 years ago
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The hair colors of the members of a family are listed below.
HACTEHA [7]
The answer is 2.heredity
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3 years ago
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