Describe how sperm are formed using the following terms:scrotum, seminiferous tubules, spermatagonia, mitosis, meiosis I,and meiosis II
Describe how sperm are formed using the following terms:scrotum, seminiferous tubules, spermatagonia, mitosis, meiosis I,and meiosis II
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1). If the diploid chromosome number of an organism is 2N=12, how many chromosomes will be found in this organism's sperm?
a). | 6 replicated chromosomes |
b). | 12 replicated chromosomes |
c). | 6 unreplicated chromosomes |
d). | 12 unreplicated chromosomes |
2). When do homologous chromosomes segregate into two different daughter cells?
3). When do sister chromatids segregate into two different daughter cells? (Choose ALL correct answers)
4). When does crossing over (the formation of chiasmata) occur?
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Which of the following statement(s) about meiosis and mitosisis/are correct? Select ALL that are true.
In mitosis the daughter cells aregenetically identical, but in meiosis the daughter cells aregenetically varied. | |
Mitosis and meiosis both begin withduplicated chromosomes. | |
Meiosis separates homologous chromosomesso that the number of chromosomes remains constant from onegeneration to the next. | |
The products of mitosis are two diploidcells, whereas the products of meiosis are four haploid cells. |
When is the number of different chromosomes in a cell divided inhalf?
When is the number of different chromosomes in a cell divided inhalf?
mitosis | |
meiosis I | |
meiosis II | |
both mitosis and meiosis I | |
both meiosis I and meiosis II |
Describe in words what the cell(s) involved would look like for the following phases of cell division in an organism with 2n=4.
Phase / division: | Description: |
metaphase mitosis | |
telophase mitosis | |
anaphase I meiosis | |
interkinesis meiosis | |
metaphase II meiosis |