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Biology 15 Online
OpenStudy (anonymous):

Describe what happens during prophase I and metaphase I and how these phases play an important role in the genetic diversity of the daughter cells produced.

OpenStudy (anonymous):

So during prophase I (beginning of meiosis I) the chromosomes become dense and visible under a microscope. The nucleus disappears and the chromosomes start going towards the center.

OpenStudy (anonymous):

During Metaphase I, the PAIRS of (homologous) chromosomes called Tetrads, line up in the metaphase plate and frequently exchange genetic complements via crossing over

OpenStudy (anonymous):

This likely what they mean by the diversity: the homologous chromosomes (one from your dad, one from your mom) exchange alleles and RECOMBINE. When the cell undergoes splits at the end of Meiosis I, the chromosomes will have a variation of dad's and mom's genes

OpenStudy (anonymous):

I hope this made sense, this topic is complicated!

OpenStudy (anonymous):

Which of the following best describes what happens during a cross-over event? Tetrads change orientation as they line up along the center of the cell. Chromatids of homologous chromosomes exchange corresponding segments. X and Y sex chromosomes overlap and combine together during metaphase. Spindle fibers overlap and attach to the wrong chromosomes during anaphase.

OpenStudy (anonymous):

its b.....

OpenStudy (anonymous):

omg thank you lol

OpenStudy (anonymous):

Which of the following best describes the process of meiosis? It is the first stage of mitosis. It occurs in all tissues that require growth or replacement. It happens in all cells except in the brain and nervous system. It is carried out in cells that are involved in sexual reproduction.

OpenStudy (anonymous):

its d..

OpenStudy (anonymous):

thankxxx :) :) :)

OpenStudy (anonymous):

in what phase of meiosis are tetrads of homologous pairs lined up along the center of the cell and attached to the spindle fibers? Anaphase I Metaphase II Metaphase I Anaphase II

OpenStudy (anonymous):

ur welcome

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