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Jet001 [13]
4 years ago
12

Breakage–fusion–bridge (BFB) cycles may help drive tumorigenesis by ... Select one:

Biology
1 answer:
agasfer [191]4 years ago
5 0

Answer:

-Option (d).

Explanation:

BFB (breakage-fusion-bridge) cycle can be defined as a mechanism associated with chromosomal disabilities. The breakage-fusion-bridge cycles are associated with tumorigenesis as it induces chromosomal abnormalities in cells.

It starts with breakdown of chromosomal end region (telomere). When that chromosome goes for replication, daughter chromatids formed by it lack telomere.

During anaphase, fused chromosomes get separated and each daughter cell gets a chromosome without telomere. These mutated daughter cells replicate again and as this process rerun, it can lead to accumulation of chromosomal instability and tumor formation.

Thus, the correct answer is option (D).

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In 2004, scientists announced the discovery of the fossil remains of some extremely short early humans on the Indonesian island
Alex

Answer: The most accepted guess is: By bamboo rafts.

Explanation:

There are two hypotheses.

The first is that they arrived on Flores as Homo erectus and then evolved to Homo floresiensis. The second is that they were already Homo floresiensis when they arrived. This second one is the more accepted hypothesis because it would take organization and language to accomplish this technological water transportation feat. Homo erectus is not known to have developed speech.

Now at the time this transport was estimated to have happened, 100000 years ago, the islands of Komodo and Flores were joined and visible from the mainland. Together they constituted a 19km wide straight visible that could be easily seen from the mainland. The Homo floresiensis tribes built bamboo rafts, or possibly some other floating apparatus made if wood, and sailed there. The islands then progressively drifted apart, isolating them.

PS: It is important to note that some things may have drove them there such as famine, violence, etc.

8 0
3 years ago
What is the source of nearly all of the energy for producers and consumers? A) oxygen B) plants C) sunlight D) water
zmey [24]
C.) Sunlight
I hope this helped!
8 0
4 years ago
Read 2 more answers
12. One similarity between DNA and messenger RNA molecules is that they both contain
kap26 [50]

Answer:

B

Explanation:

In fact, mRNA's bases are directly copied from DNA. However mRNA's bases are complimentary to DNA's .!

7 0
3 years ago
What is the result of dissociation of water? a) Formation of O-2 ions b) Formation of H+ and OH- ions c) Formation of H- and OH+
kati45 [8]
I think the correct answer from the choices listed above is option C. The result of the dissociation of water is  the formation <span>of H- and OH+ ions. This process is reversible which means that it could form back to water. Hope this answers the question. Have a nice day.</span>
4 0
3 years ago
How might you model the relationship between a tomato plant and the hornworm caterpillar? Identify the components of the model i
PIT_PIT [208]

Answer:

Parasitism.

Explanation:

The relationship between a tomato plant and the hornworm caterpillar is parasitism because parasitism is a type of symbiotic relationship in which one organism get benefits and the other get harmed. We know that hornworm caterpillar feed on leaves and destroy the tomato crop. So it gets nutrients from tomato plant and the tomato plant is negatively affected. The input of this system is the vegetative part of tomato plant while the output is the conversion of hornworm caterpillar into a moth.

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3 years ago
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