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What is the number of chromosomes and chromatids in each phase of Mitosis and Meiosis?
I've seen that these question have already been asked on here and have been answered, but there was never a 0 on the chromatids in the answers I saw, and while I don't remember where they are exactly, I remember learning in class that during some of the phases the chromatid numbers are 0, so I'm trying again!
So, using the 46 chromosomes in human cells, how many chromosomes and chromatids are in the following phases for-
Mitosis:
G1 ___ Chromosomes and ___ Chromatids
S ___ Chromosomes and ___ Chromatids
G2 ___ Chromosomes and ___ Chromatids
Prophase ___ Chromosomes and ___ Chromatids
Metaphase ___ Chromosomes and ___ Chromatids
Anaphase ___ Chromosomes and ___ Chromatids
Early Telophase __ Chromosomes and __ Chromatids
Late Telophase __ Chromosomes and __ Chromatids
End of Cytokinesis __ Chromosomes and __ Chromatids
And Meiosis 1:
G1__ Chromosomes and __ Chromatids
S __ Chromosomes and __ Chromatids
G2 __ Chromosomes and __ Chromatids
Prophase 1 __ Chromosomes and __ Chromatids
Metaphase 1 __ Chromosomes and __ Chromatids
End of Anaphase 1 __ Chromosomes and __ Chromatids
Telophase 1 (Early) __ Chromosomes and __ Chromatids
Cytokinesis 1 __ Chromosomes and __ Chromatids
Meiosis 2 (no synthesis):
Prohase 2 ___ Chromosomes and ___ Chromatids
Metaphase 2 ___ Chromosomes and ___ Chromatids
End of Anaphase 2 ___ Chromosomes and ___ Chromatids
Telophase 2 (early) ___ Chromosomes and ___ Chromatids
Cytokinesis 2 ___ Chromosomes and ___ Chromatids
3 Answers
- Ishan26Lv 77 years agoFavorite Answer
The number of chromosomes is doubled in prophase. At anaphase, each daughter cell gets the same number as the parent cell had. This is the case with mitosis.
In meiosis too the number of chromosome is doubled at prophase, but at anpahase i the number in each daughter cell is halved.
In meiosis the situation is different with respect to the number of chromosomes. Each chromosome has two chromatids which can be best seen at metaphase.
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- 7 years ago
In both G1s there are 0 chromatids
In anaphase, telophase and cytokinesis of mitosis and meiosis 2 there are 0 chromatids.
- RolandLv 77 years ago
You should be able to figure it out for yourself:
There can be no "chromatids" until DNA is synthesized - when does that happen?
There can be no "chromatids" after centromeres split - when does that happen?