Question

Cynthia observed a cell with a pair of sister chromatids moving toward a given pole as a single unit and another cell with sister chromatids moving to opposite poles. What did she infer from her observation?
a. The first cell is in anaphase I, and the second cell in anaphase II.

b.The first cell is in metaphase II, and the second cell in metaphase I.

c.The first cell is in anaphase II, and the second cell in anaphase I.

Answer 1

@carolina4567

Answer 2

@shrutipande9

Answer 3

Meiosis II[edit]
Meiosis II is the second part of the meiotic process, also known as equational division. Mechanically, the process is similar to mitosis, though its genetic results are fundamentally different. The end result is production of four haploid cells (23 chromosomes, N in humans) from the two haploid cells (23 chromosomes, N * each of the chromosomes consisting of two sister chromatids) produced in meiosis I. The four main steps of Meiosis II are: Prophase II, Metaphase II, Anaphase II, and Telophase II.[citation needed]

In prophase II we see the disappearance of the nucleoli and the nuclear envelope again as well as the shortening and thickening of the chromatids. Centrioles move to the polar regions and arrange spindle fibers for the second meiotic division.[citation needed]

In metaphase II, the centromeres contain two kinetochores that attach to spindle fibers from the centrosomes (centrioles) at each pole. The new equatorial metaphase plate is rotated by 90 degrees when compared to meiosis I, perpendicular to the previous plate.[citation needed]

This is followed by anaphase II, where the centromeres are cleaved, allowing microtubules attached to the kinetochores to pull the sister chromatids apart. The sister chromatids by convention are now called sister chromosomes as they move toward opposing poles.[citation needed]

The process ends with telophase II, which is similar to telophase I, and is marked by uncoiling and lengthening of the chromosomes and the disappearance of the spindle. Nuclear envelopes reform and cleavage or cell wall formation eventually produces a total of four daughter cells, each with a haploid set of chromosomes.

Meiosis is now complete and ends up with four new daughter cells.

Answer 4

So key word : The sister chromatids by convention are now called sister chromosomes as they move toward opposing poles. Or key sentence

Answer 5

Cynthia observed sister chromatids moving toward a given pole as a single unit and another cell with sister chromatids moving to opposite poles.

Answer 6

So it a no brainer

Answer 7

C :)

Answer 8

Good job @carolina4567 !!!

Answer 9

Thank u so mch @Cydney_Morgan

Answer 10

thank you!