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3 years ago

Which noncoding rna coats the inactive x-chromosome in regions of heterochromatin?

1 answer:

3 0

The answer is the Xist RNA, x-inactive specific transcript is a gene on the X chromosomes of the placental mammals that acts as a major effector of the X inactivation process. Non coding RNA is a functional RNA molecule that is transcribed from DNA but not translated into proteins.

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Explain how the scales on some fishes can be used to estimate the age of those fishes

DedPeter [7]

Amount of wear, and how long they are may contribute with age and maybe even coloration and pigment.

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3 years ago

What is the structure shown in the figure?

Aneli [31]

Answer:

lipids

Explanation:

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3 years ago

Which of these pollutants is biodegradable?

vfiekz [6]

Answer:

Food waste

Explanation:

Food waste is an organic compound, unlike the other choices. Organic compounds are biodegradable because living organisms, such as decomposers, have evolved mechanisms of breaking down these large carbon-based compounds/polymers into smaller molecules for energy. Food waste is therefore easily recycled into the environment.

The others do not have naturally occurring organisms to break them down or reduce them. They would, therefore, accumulate in the environment. This is exactly what is happening to plastc pollution. Accumulation of plastic in the environment is due to fact that they are not broken down into simpler molecules by any naturally occurring bacteria or organisms in the environment.

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3 years ago

How did Darwin arrive at the idea about species variation

jeyben [28]

Answer:

We can see some of the most important patterns Darwin noticed in distribution of organisms by looking at his observations of the Galápagos Islands off the coast of Ecuador. Darwin found that nearby islands in the Galápagos had similar but nonidentical species of finches living on them.

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3 years ago

Energy Generation in Aerobic and Anaerobic Conditions

Ira Lisetskai [31]

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And talk about the weather

But traditions I can trace against the child in your face

Won't escape my attention

You keep your distance via the system of touch

And gentle persuasion

I'm lost in admiration, could I need you this much?

Oh, you're wasting my time

You're just, just, just wasting time

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I never find out until I'm head over heels

Something happens and I'm head over heels

Ah, don't take my heart, don't break my heart

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1 year ago