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Tems11 [23]
3 years ago
6

The urban migration trend has stopped worldwide.

Biology
2 answers:
dlinn [17]3 years ago
7 0

Answer:

True

Explanation:

finished the test

tresset_1 [31]3 years ago
3 0

Answer:

T ( True )

Explanation:

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Chiasma form during meiosis I but not during mitosis. <br> a. True <br> b. False
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Answer:

True

Explanation:

Chiasma is the site of crossing over. It is an X-shaped site that appears in a tetrad (bivalent) chromosome during the diplotene stage of prophase I of meiosis I. Crossing over refers to the exchange of segments of chromatids and occurs between homologous chromosomes only. Crossing over is the event of prophase I of meiosis I and produce new gene combinations.

The homologous chromosomes are separated from each other but remain attached at chiasmata. The dissolution of chiasmata occurs by the end of prophase I and separates the homologous chromosomes completely from each other. Crossing over does not occur in mitosis. Since mitosis does not include crossing over, chiasmata are also not formed in mitosis.

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Lubov Fominskaja [6]

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C. Disrupting intermediate filaments will result in cells that are more susceptible to mechanical forces. In the case of the keratinocytes, disrupting keratin, a key IF in these cells, would result in very fragile cells. Less force would need to be applied using the magnetic beads to damage them or change their shape.

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