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LenKa [72]
4 years ago
9

Which statement about the DNA replication process in prokaryotes is true?

Biology
2 answers:
spayn [35]4 years ago
8 0

the answer is definitly D.)

PtichkaEL [24]4 years ago
6 0

The right answer is D.

The origin of replication (also called "ori") is a unique DNA sequence that allows the initiation of replication. It is from this sequence that unidirectional or bidirectional replication begins.

Prokaryotes have a single circular DNA molecule and therefore usually only one origin of replication. Depending on the Archaea species, there may be one or more origins of replication by replicon1. Eukaryotes have multiple origins of replication on each chromosome.

The origin of replication of Escherichia coli is known as oriC and extends over 245 base pairs (bp). It contains upstream of a 13 bp sequence (GATCTNTTNTTTT) repeated three times, and further downstream, four 9 bp (9mer) sequences that are in either orientation. Proteins, called DnaA, will bind to the repeated 9 bp sequences. The DNA will then wrap around the protein complex of DnaA. This conformational change in DNA results in the opening of the DNA double helix at the adenine and thymine-rich 13 bp repeat which allows enzymes and other factors to bind to dissociated strands and start replication.

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vazorg [7]

Answer:

d) The process of meiosis produces haploid cells

Explanation:

<em>Meiosis is a form of cell division that involves sex cells. A single diploid sex cell divides twice (meiosis I and meiosis II) to produce four haploid daughter cells. Meiosis is sometimes referred to as reductional cell division because involves halving of the chromosome number of the parent cell.</em>

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Hence, the most correct option is d.

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