All matter is composed of tiny particles called

1 answer:

7 0

Are composed tiny particles called Atoms. Which are composed of neutrons, protons and electrons.
Hope this is a successful answer!:)

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During meiosis, sister chromatids are separated and move toward opposite ends of the cell as the centromeres that hold them sepa

julsineya [31]

Telophase II begins after the separation of sister chromatids. In this phase individual chromosomes reach at pole. Nuclear membrane starts getting formed around them and cytokinesis takes place. Cytokinesis is the division of cytoplasm.

This results in the formation of four daughter cells which are haploid.

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3 years ago

Which of these checkpoints determines if cell division has occurred properly?

Tomtit [17]

<span>Cell division has two checkpoints namely, G1 checkpoint and spindle assembly checkpoint. The checkpoint which determines if division has properly occurred is the G1 checkpoint. At this point, is a damage in the DNA is detected or the has not reach the optimum size, the cell is stopped in G1 and is not allowed to proceed to further process.</span>

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3 years ago

Which of the following abiotic factors would likely affect humans directly?

alekssr [168]

One of the most abiotic factor that may affect humans directly is waster availability because with out water we can get dehydrated and die.

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3 years ago

Matings between individuals from the two populations of Rhagoletis produce hybrid flies that appear to be healthy and have norma

Mama L [17]

<h2>The correct answer is : C.</h2>

Explanation:

According to the question, mating between two populations of Rhagoletis produce hybrid flies.
This means that the two population is present in the same habitat or locality, hence they are capable of coming in contact with each other and mate. Hence, the answer cannot be Habitat Isolation.
Mating produces hybrid flies. This is possible when the gametes (egg and sperm) of the two different populations are capable of capable of coming close to each other and undergoing fusion (fertilization). Hence, there is no Mechanical Isolation.
The zygote formed by the above fertilization is capable of developing into healthy hybrid flies with normal life span. Hence, Pre-zygotic Isolation is absent.
But the hybrid flies formed are sterile and not fertile, that is, they are incapable of producing viable gametes which can undergo fertilization and produce a new offspring.Therefore, the eggs laid by the hybrid flies hatch less often. Hence, there is existence of Reduced hybrid fertility.

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3 years ago

What factors explain the difference in biodiversity between the tundra and the tropical rain forest?

Natali [406]

I think the correct answer from the choices listed above is option B. The difference in biodiversity between the tundra and the tropical rain forest would be that warmer temperatures and higher average rainfall in the tropical rainforest allow more things to survive. Hope this answers the question.

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3 years ago

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