Can someone please check my answer? Understanding chromosome number and behavior during cell division is an...
Can someone please check my answer?
Understanding chromosome number and behavior during cell division is an important concept in genetics. Fill out the chart below for each phase of mitosis in terms of N (where N = haploid number). For example, humans have a haploid number of 23. There are 46 chromosomes (2N) present in prophase of mitosis. Each chromosome is present in its replicated form (i.e. as sister chromatids) so there will be 2 chromatids per chromosome and the number of chromatids is 92 (4N). Each chromosome/chromatid is a DNA molecule. Chromosomes are presents as chromatids in prophase; therefore there are 4N DNA molecules present in prophase in humans. Bivalents/tetrads are not present during mitosis, so there are 0 of these. Each box must have a number – if there are 0 present at a particular phase, please write 0. I recommend beginning each phase with the number of chromosomes and working from there.
Answer:
|
Phase |
Number of Chromatids |
Number of Chromosomes |
Number of DNA Molecules |
Number of Bivalents/Tetrads |
|
G1/ Interphase |
92 |
46 |
92 |
23 |
|
G2/ Interphase |
92 |
46 |
92 |
23 |
|
Prophase/ Mitosis |
92 |
46 |
92 |
23 |
|
Prometaphase/ Mitosis |
92 |
46 |
92 |
23 |
|
Metaphase/ Mitosis |
92 |
46 |
92 |
23 |
|
Anaphase/ Mitosis |
92 |
92 |
92 |
0 |
|
Telophase/ Mitosis |
184 |
92 |
184 |
46 |
|
Prophase I/ Meiosis |
92 |
46 |
92 |
23 |
|
Metaphase I/ Meiosis |
92 |
46 |
92 |
23 |
|
Anaphase I/ Meiosis |
92 |
46 |
92 |
23 |
|
Telophase I/ Meiosis |
92 |
46 |
92 |
23 |
|
Prophase II/ Meiosis |
92 |
46 |
92 |
23 |
|
Metaphase II/ Meiosis |
92 |
46 |
92 |
23 |
|
Anaphase II/ Meiosis |
184 |
92 |
184 |
0 |
|
Telophase II/ Meiosis |
184 |
92 |
184 |
46 |
|
Gamete |
46 |
23 |
46 |
0 |
|
Non-Dividing Somatic Cell |
92 |
46 |
92 |
23 |
Homework Answers
|
Phase |
Number of Chromatids |
Number of Chromosomes |
Number of DNA Molecules |
|
G1/ Interphase |
46 |
46 |
46 |
|
G2/ Interphase |
92 |
46 |
92 |
|
Prophase/ Mitosis |
92 |
46 |
92 |
|
Prometaphase/ Mitosis |
92 |
46 |
92 |
|
Metaphase/ Mitosis |
92 |
46 |
92 |
|
Anaphase/ Mitosis |
46 |
46 |
92 |
|
Telophase/ Mitosis |
46 |
46 |
46 (after telophase and cytokinesis) |
|
Prophase I/ Meiosis |
92 |
46 |
92 |
|
Metaphase I/ Meiosis |
92 |
46 |
92 |
|
Anaphase I/ Meiosis |
92 |
46 |
92 |
|
Telophase I/ Meiosis |
92 (after telophase 46) |
46 |
92 |
|
Prophase II/ Meiosis |
46 |
23 |
92 |
|
Metaphase II/ Meiosis |
46 |
23 |
92 |
|
Anaphase II/ Meiosis |
46 |
46 |
184 |
|
Telophase II/ Meiosis |
46 |
46 |
184 |
|
Gamete |
46 |
23 |
46 |
|
Non-Dividing Somatic Cell |
92 |
46 |
92 |
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Can someone please check my answer?
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the:
left panel:
________________ ["anaphase of meiosis I", "metaphase
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