You are examining a cell under the microscope and see what appear to be four sister chromatids bound together and remnants of the nuclear envelope. What stage of meiosis are you looking at?
A) prophase I
B) prophase II
C) metaphase I
D) metaphase II
E) telophase I

Question

Quizplus · Accepted Answer

During prophase I of meiosis, sister chromatids condense and become visible under a microscope as paired homologous chromosomes. The nuclear envelope also breaks down during this stage, allowing for the pairing and crossing over of homologous chromosomes. The presence of four sister chromatids bound together indicates that two pairs of sister chromatids are connected at a chiasmata, which occurs during crossing over in prophase I.

You Are Examining a Cell Under the Microscope and See