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1-What is the difference between sister chromatids and non- sisterchromatids of homologous chromosomes2-

2-What is the difference between a chromatid and sister chromatids?

3-howis cell cycle controlled?

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Collen Von
Collen VonLv2
28 Sep 2019

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Related questions

Meerkats are a diploid organisms with n=18.

For each of the following, indicate the total number of chromosomes, the number of pairs of homologous chromosomes and the number of pairs of sister chromatids. Indicate if the cell in question is diploid or haploid and if the daughter cell will be diploid or haploid.

A. A non-dividing skin cell

Total number of chromosomes:

Number of pairs of homologous chromosomes:

Number of pairs of sister chromatids:

Diploid or haploid?

B. A cell is prophase of meiosis I:

Total number of chromosomes:

Number of pairs of homologous chromosomes:

Number of pairs of sister chromatids:

Diploid or haploid?

Daughter cell diploid or haploid?

C. Cell in metaphase meiosis II:

Total number of chromosomes:

Number of pairs of homologous chromosomes:

Number of pairs of sister chromatids:

Diploid or haploid?

Daughter cell diploid or haploid?

D. A mature sperm cell:

Total number of chromosomes:

Number of pairs of homologous chromosomes:

Number of pairs of sister chromatids:

Diploid or haploid?

4. The following questions dealwith the organization of the genetic material within a cell. Makesimple sketches (or describe) to help you visualize the variousstructures as you answer these questions.

  • What is chromatin?
  • How is chromatin related to a chromosome?
  • The length of a single chromosome is several thousandtimes the diameter of the cell containing it. How is it possible tofit such large structures into a cell?
  • What are sister chromatids? What connectsthem?
  • Do all cells in your body have the same number ofchromosomes? Explain why.
  • What are homologous chromosomes?
  • What is the difference between a sister chromatid and achromosome?
  • Is the structure only called a chromosome when it is madeup of two sister chromatids? Explain.

5. List the phases of the cell cycle anddescribe the sequence of events that occurs during eachphase. Use the masteringbio website, chapter 12,activity 2 (The cell cycle), more important is activity 3 (Mitosisand cytokinesis animation). Greatreview!

Sister Chromatids.

please help! I found a lot of different information on this three questions but will be very helpful to have an extra opinion and summarizing. THANK YOU!

1. During which stages of the cell cycle are two sister chromatids present? Explain briefly.

2. What is IMPORTANT about sister chromatids in metaphase?

3. What is IMPORTANT about sister chromatids in anaphase?

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