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postnew [5]
3 years ago
6

You decide to repeat the Meselson-Stahl experiment, except this time you plan to grow the cells on light 14N medium for many gen

erations and then transfer them to heavy 15N medium and allow them to grow for 2 additional generations (2 rounds of DNA replication). If the conservative model of DNA replication is correct, what is the expected distribution of DNA in the density gradient after one round of replication?
Biology
1 answer:
Effectus [21]3 years ago
5 0

Answer:

One band of light density and one band of heavy density.

Explanation:

According to conservative model of replication, the original strands do not separate from each other during replication. Hence, after replication the old strands are together and the new strands are together.

Here, cells were grown in 14N medium first so 14N was used for DNA replication and all DNA molecules had 14N. When the cells were transferred to 15N medium, only 15N was available for replication process. New DNA molecules would be synthesised using 15N (15N15N) and old DNA molecules have 14N (14N14N). Hence, in density gradient one band will be of light density (14N14N) and one band will be of heavy density (15N15N).

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juin [17]

Answer:

The brain controls what you think and feel, how you learn and remember, and the way you move and talk. But it also controls things you're less aware of — like the beating of your heart and the digestion of your food.

Think of the brain as a central computer that controls all the body's functions. The rest of the nervous system is like a network that relays messages back and forth from the brain to different parts of the body. It does this via the spinal cord, which runs from the brain down through the back. It contains threadlike nerves that branch out to every organ and body part.

Explanation:

If you brain does not, or is unable to perform multiple tasks automatically, you could have trouble breathing on your own, your heart could have problems, even your thought process, movement, and digestion could malfunction. Which could cause a multitude of complications.

Hope this helped, have a great day/night :}

7 0
3 years ago
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hope this at least helped you :>

7 0
3 years ago
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how does the word "haploid" apply to the gametes formed during meiosis. Why is it important that gametes are haploid instead of
liraira [26]

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Identify the independent and dependent variable for the following statement :
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IV: Student grade level (6th, 7th, 8th)

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Explanation:

6 0
2 years ago
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Pie

Hi there! Hopefully this helps!

--------------------------------------------------------------------------------------------------------

The answer to your question is the second sentence:

<em> </em><em>Atoms</em><em> in the star </em><em>begin to combine.</em>

5 0
3 years ago
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