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Mrac [35]
3 years ago
9

What is a gene?

Biology
1 answer:
AnnZ [28]3 years ago
3 0
A. a single chromosome that is not replicated
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Which of the following is a true statement about fertilizers?
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on my view its first one

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Indicate whether each of the following occurs mainly in G1 phase (G), S phase (S), or G2 phase (H) of the cell cycle. Your answe
Ronch [10]

Answer:

Correct choice should be:

"SGSG"

Explanation:

The cell cycle consists of G1, S, G2 and M phase. The former three phases include the interphase and M phase is the dividing phase of cell . G1 prepares cell for DNA synthesis. S phase is the phase where DNA replication takes place. G2 phase prepares cell for cell division or M phase.

G1 phase preceeds replication or S phase and G1 phase licences DNA replication.

During other phases of cell cycle, ORC complex masks origin of replication. ORC phosphorylation takes place at S phase, which removes this omplex and unmasks origin of repication site so that replication machinery can bind to it.

DNA helicase activation: S phase

DNA helicase deposition on DNA at the replication origins: G phase (actually G1)

ORC phosphorylation: S phase

Licensing of replication origins : G phase (actually G1)

Hence correct choice should be:

SGSG

5 0
3 years ago
Within the chemical formula 18CO₂ the ₂ is known as a what?
ANEK [815]

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Subscript  

Explanation:

The small numbers below the line are subscripts (Latin <em>sub </em>+<em> script</em> = under + written).

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