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How are sister chromatids and homologous chromosomes different from each other?

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Bunny Greenfelder
Bunny GreenfelderLv2
30 Jan 2020

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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?

1. only one chromosome of a homologous pair is present in a cell

2. sister chromatids seperate

3. homologous chromosomes pair up

4. parent cell and daughter cells are genetically identical to each other

5. chromosomes replicate before nuclear division

6. crossing over

7. involved in growth and repair

8. homologous chromosomes separate

9. synthesis of sister chromatids before division

10. independent assortment

Answer Choices:

A. occurs ONLY in meiosis

B. occurs in BOTH mitosis and meiosis

C. occurs ONLY in mitosis

You count a total of eight chromosomes in an animal cell at metaphase I in meiosis. (1pt)a) What is this organism’s diploid number?b) How many pairs of homologous chromosomes are there?c) How many sister chromatids?d) Would you expect to see the same or different numbers of sister chromatids in a mitotic metaphase cell from the same organism?

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