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marissa [1.9K]
3 years ago
15

Which one of the following factors significantly contributes to the ability of eukaryotic cells to complete DNA replication duri

ng the short window of time offered by S phase? Which one of the following factors significantly contributes to the ability of eukaryotic cells to complete DNA replication during the short window of time offered by S phase?
A. Eukaryotic DNA polymerases have dramatically increased processivity compared to DNA polymerases in organisms with smaller genomes.
B. Multiple origins of replication are activated per chromosome.
C. Origins of replication can initiate again after they have been replicated and before mitosis.
D. The next round of replication begins before the cell exits S phase.
Biology
1 answer:
irina [24]3 years ago
7 0

Answer:

B. Multiple origins of replication are activated per chromosome.

Explanation:

DNA replication runs in 2 directions (bidirectional), starting at the origin of replication an moving in both directions from that point. A eukaryotic chromosome may be replicating at many points along its length at any one time.

DNA is always copied in a 5´ ⇒ 3´ direction, this makes the lagging strand to be synthesized discontinuously as short okazaki fragments.

The whole process happens at the same time in both strands in a replication fork. DNA may have different replication forks at the same time to speed up the process.

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In ostriches, there are 2 types: ones that run fast and those that run slowly. The fast birds can reach up to 40 miles an hour.
liraira [26]

Answer:

Natural selection will select the type of ostriches that can run up to 40 mph.

Explanation:

According to the theory of natural selection, organisms with favorable traits following their environment are more likely to reproduce. In doing so, they pass on the better traits to their next generation for the survival of their species.

This process allows organisms to adapt to their environment. And the survival of species is assured.

Here, the type of ostriches that run slow probably fall prey to the jackals. To maintain survival, the ostriches reproduce and lay eggs. If out of almost a dozen eggs, one or two are left to hatch than the <em><u>chances of their survival</u></em> will greatly be affected if the hatching ostriches are of the <em>slow-running type</em>.

Therefore, natural selection may stay in favor of <em>fast-running ostriches</em> to hatch.

5 0
3 years ago
____ and ____ are always moving, so they have kinetic energy.
natita [175]

Answer:

motion and kinetic energy

Explanation:

8 0
3 years ago
The mitotic spindle and microtubules were not present in the mitosis models; describe their process throughout the steps of mito
Alex777 [14]

Answer:

Following are the solution to this question:

Explanation:

In a spindle in prophetic (mitotic apparatus) spindle, pulley and cellular membranes form at the kinetochore of metaphase genes intended besides separation of anaphase daughter chromosomes.

Even though the cycle of creation of the cells move towards opposite poles, microtubules gradually form a network between them, and its duplicate chromosomes would be later removed.

8 0
3 years ago
How does the doppler effect support the Big Bang
xxMikexx [17]
If the star is receding, the pattern moves to longer, redder wavelengths. This is called redshift. Edwin Hubble used the Doppler effect<span> to determine that the universe is expanding. ... This red shift indicates that stars are moving away from us and from each other.</span>
5 0
3 years ago
Nico wants to buy a new digital camera for his semester studying abroad but he knows very little about cameras, having never own
scZoUnD [109]

Answer:

an external search

Explanation:

According to my research on the consumer buying process, I can say that based on the information provided within the question Nico is engaging in an external search. In Marketing, this term refers to when an individual has no knowledge of a product and therefore seeks out information from personal contacts or various public sources in order to make an informed decision. Which in this case is what Nico is doing by asking in different places about cameras.

I hope this answered your question. If you have any more questions feel free to ask away at Brainly.

4 0
3 years ago
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