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slega [8]
2 years ago
14

In preparing a karyotype, a blood sample is centrifuged. The reason for using this device is to

Biology
2 answers:
Bezzdna [24]2 years ago
4 0

Answer:

Tbh C is the only one that makes sense to me

Mumz [18]2 years ago
3 0
Its D. Smash all of the chromosomes in the cells
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The uppermost horizon, horizon O, in this profile is composed mostly of _________, while the lower horizon, horizon C, is compos
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<u>Answer;</u>

C) organic matter; rocks.

The uppermost horizon, horizon O, in this profile is composed mostly of <u>organic matter</u>, while the lower horizon, horizon C, is composed mostly of <u>rocks.</u>

<u>Explanation;</u>

-Soil contains the following major horizons, that is A B and C. Some soils may have horizon O, which may be thin or thick or even lack in some soils. This O horizon is found at the surface of many soils and normally contains organic materials at various decomposition stages. these are materials such as plants, leaves and bugs.

-C horizon is the layer that is below the B horizon. It contains larger weathered fragments or broken up-bedrock.

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3 years ago
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its a stimuli a memory is something you can choose to remember or to do

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Which statement best describes a galaxy?
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Arrange the following events in the order in which they occurred.
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Answer:

1→4→5→3→2

∙

Mitotic cell division starts with the condensing of chromosome accompanied by splitting of the centrosome and its movement towards the opposite poles.

∙

As the nuclear envelope and nucleolus disappear, spindle fibres arise from the centrosomes and start binding to the condensed chromosomes at the centromeres.

∙

The chromosomes bound by the spindle fibers are then arranged in the middle of the cell forming the equatorial metaphase plate.

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Next the centromere splits and the sister chromatids are pulled away towards the poles by the contraction of spindle fibres.

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Following this, a cleavage furrow starts to develop in the middle of the cell while the nuclear membrane starts to reappear around the separated chromatids.

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The condensed chromatids start thinning into chromatin fibre along with reappearance of the nucleolus and the cleavage furrow deepening further.

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Finally as the nuclear membrane becomes fully intact, the cleavage furrow deepens and split the cells from middle into two daughter cells.

8 0
1 year ago
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