For the following three questions, refer to the picture below of a cell at a par

Question

For the following three questions, refer to the picture below of a cell at a partricular time in the cell cycle. 31) Which of the following stages is most likely represented in the above image? A) metaphase II of mitosis B) prophase of mitosis C) cytokinesis D) metaphase of mitosis E) metaphase I of meiosis 32) What is the diploid number of chromosomes in a somatic cell of the organism whose cell cycle stage is represented in the picture? A) 4 B) 1 C) 2 D) 8 E)3 33) In the picture, chromosomes are touching each other. Which of the following best describes this interactions: A) recombination is happening between sister chromatids B) non-sister chromatids are held together by the protein cohesin C) non-sister chromatids are undergoing recombination D) sister chromatids are being held together by the synaptonemal complex E) microtubules have glued the chromosomes together

Explanation / Answer

31). E options is correct. This picture is showing stage of metaphase I of meiosis as pair of homologous chromosomes (tightly coiled and condensed) arranged (on the plane) eqidistant from the poles.

32). A option is correct. There are two pairs of chromosomes, hence diploid number is 2n i.e. 2*2 =4

33). In this picture non-sister chromatids are undergoing recombination hence option C is correct.

thanks

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