Biology, 16.04.2020 00:11 nowenpimu586

DNA replication in early Drosophila embryos occurs about every 5 minutes. The Drosophila genome contains approximately 1.8 X 108 base pairs. Eukaryotic DNA polymerases synthesize DNA at a rate of approximately 60 nucleotides per second. Approximately how many origins of replication are required for this rate or replication?

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Answer from: eto911

5000 number of origins

Explanation:

Drosophila genome contains = $1.8 * 10^{8}$ base pairs

Eukaryotic DNA polymerases synthesize = 60 nucleotides per second.

Note:DNA replication in people is bi directional.

Thus, by changing over the human DNA replication rate to the pace of drosophila replication, we get

Whereas, in 5 minutes we have 300 sec,

60 nucleotides

and

2 is bidirctional

300 sec × 60 × 2,

is equal to 36000/sec

Presently to show up at the quantity of sources of replication that is required for this pace of replication in drosophil, we need to separate as follows

rate of replication in drosophila/ rate of replication in human

= ( $1.8 * 10^{8}$ ) / 36000

= $5 * 10^{3}$

= 5000 number of origins

Answer from: 6011028

20000 origins of replication are required for the rate of replication.

Explanation:

The Drosophila genome size is 1.8x10⁸bp, then every strand has 1.8x10⁸nucleotides.

If the DNA polymerases synthesize DNA at a rate of 60 nucleotides. In one strand will be 30 nucleotides, thus, in 5 minutes:

5*60*30 = 9000

Then, the number of origins of replication is:

$OR=\frac{1.8x10^{8} }{9000} =20000$

Answer from: Quest

the answer to your question is slate

Answer from: Quest

there are mainly three domains in biological classification namely; archaea, bacteria, and eukarya.

archaea includes all the prokaryotic cells which are characterized by their lipid membranes. they have branched hydrocarbon which is attached to glycerol through an ether linkage.

bacteria includes all the prokaryotic cells, the cell membrane of which are made up of the unbranched fatty acid chain. in addition, they are attached to glycerol through an ester bond.

eukarya includes all the eukaryotic cells, that is, the cells contain a nucleus and other membrane-bound cell organelles.

they can be autotrophic as well as heterotrophic, unicellular as well as multicellular

they include kingdoms like protista, plantae, animalia, fungi et cetera.

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