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Aliun [14]
3 years ago
7

HELP, URGENT!!!! What is the correct answer?

Biology
1 answer:
oksian1 [2.3K]3 years ago
7 0

I don't have the best background in this but I would say the 4th one because DNA structure has different builds and order such as,

  • Because there are four naturally occurring nitrogenous bases, there are four different types of DNA nucleotides: adenine (A), thymine (T), guanine (G), and cytosine (C).

  • DNA can be ordered in such way that our DNA could be ordered to that of spit so id say D

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In sedimentary rock the oldest fossils would be expected to be found
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Answer:

At the bottom of the sequence

Explanation:

According to the "principle of superposition of strata", the oldest rocks are formed at the bottom of sedimentary rock sequences.

The oldest rock layer would contain the the oldest fossil. Weathering, erosion, transportation and deposition would bring all sediments which includes rock materials and remains of living organisms to the basin where they would be lithified to form sedimentary rocks. This makes the oldest fossil to be at the bottom of the sequence. As time progresses, the fossil sequence would continue to accumulate and young upwards as the strata becomes relatively younger. Also, we know that fossils succeed one another in a definite manner.

This why relative dating of rocks can be possible.

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Which biomolecule typically contains both Nitrogen and Phosphorous?
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Which of the following statements regarding restriction enzymes is NOT true? See Section 15.1 (Page 554) . Which of the followin
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Answer:

Most restriction enzymes recognize sequences of 20-25 bp in length

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Restriction enzymes are endonucleases, which means they cut phosphodiiester bonds within DNA. These enzymes are from prokaryotic organisms (archea and bacteria) which use them as defending mechanism against viruses. Prokaryotes protect their own DNA via methylation, performed by methyltransferase.

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