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Biology

2 answers:

son4ous [18]3 years ago

6 0

Answer:

How bout now? this is my alt

Explanation:

EastWind [94]3 years ago

4 0

Answer:

Since there are so many different Species in the Galapagos, a lot of Competition takes place. Lack of Food, and Lack of type of food can affect the Animals severly, and cause starvation, and immenent death.

(P.S I tried my best, but I could be wrong.)

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State TWO ways in which the angiosperms are better adapted to a terrestrial life than the bryophytes.

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Cells from advanced malignant tumors often have very abnormal chromosomes as well as an abnormal number of chromosomes. What mig

patriot [66]

Answer:

Option- D: Is the best choice to choose from the given options.

Now, let us explain the term Cell cycle in a more comprehensive way.

As the cell cycle is controlled at three checkpoints.

The integrity of the DNA is assessed at the G₁ checkpoint.

Proper chromosome duplication is assessed at the G₂ checkpoint.
Attachment of each kinetochore to a spindle fiber is assessed at the M checkpoint.

Explanation:

The cell cycle is controlled by three internal checkpoints that evaluate the condition of the genetic information.

The G₁ Checkpoint:This stage determines whether all conditions are favorable for cell division to proceed. The cell can halt the cycle and attempt to remedy the problematic condition, or the cell can advance into G₀ (inactive) phase and await further signals when conditions improve.
The G₂ Checkpoint: The most important role of the G₂ checkpoint is to ensure that all of the chromosomes have been accurately replicated without mistakes or damage.
The M Checkpoint:It occurs near the end of the meta-phase stage of mitosis. it determines whether all the sister chromatids are correctly attached to the spindle micro-tubules