Biology, 30.01.2021 21:30 Carlos448

Meiosis does PMAT twice! That means there is a prophase I and a prophase II. There is a metaphase I and a metaphase II. Etc… If the cartoon below has chromosomes in the middle of the cell, how would you know whether it was in metaphase I or metaphase II?

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Answer from: harmonywilliams3064

One can detect if the cell is in metaphase I or II as follows:

If there is homologous chromosomes (metaphase I) or duplicated chromosomes/sister chromatids (metaphase II) in the middle of the cell.

MEIOSIS:Meiosis involves two series of nuclear divisions grouped into meiosis I and meiosis II. Each division has the same number of stages i.e prophase, metaphase, anaphase, telophase etc.Meiosis I involves the separation of homologous chromosomes i.e similar but non-identical chromosomes from each parent. On the other hand, meiosis II involves the separation of sister chromatids (duplicated chromosome). Since metaphase is generally characterized by the alignment of chromosome at the middle of the cell, it means that the difference between metaphase in meiosis I and II will be whether it is homologous chromosomes that are in the middle or sister chromatids.

Therefore, according to this question, one would know if the cartoon is in metaphase I or II if:

- there are homologous chromosomes in the middle of the cell (metaphase I)

- there are sister chromatids in the middle of the cell (metaphase II).

Learn more about meiosis at: link

Answer from: Quest

hi, natural selection of the peppered moth during the industrial revolution in 19th-century england is an example of an outlier in the study of evolution. during this time, pollution from factories filled the forests, coating trees in a layer of soot—turning white trees black

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Answer from: Quest

false because ozone (o3) depletion does not cause global warming, but both of these environmental problems have a common cause: human activities that release pollutants into the atmosphere altering it.

global warming is caused primarily by putting too much carbon dioxide into the atmosphere when coal, oil, and natural gas are burned to generate electricity or to run our cars.

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Meiosis does PMAT twice! That means there is a prophase I and a prophase II. There is a metaphase I...