Pls. state the number of chromosomes and chromatids present in a human cell at t
ID: 91812 • Letter: P
Question
Pls. state the number of chromosomes and chromatids present in a human cell at the given points in the cell cycle
Chromosomes Chromatids
Prophase of mitosis 46 46
G1 phase 46 46
Interkinesis 23 46
Prophase I (Meiosis) 46 92
Telophase II 46 46
Telophase of mitosis 92 92
Metaphase (Mitosis) 46 92
Metaphase II 23 92
is this correct?
Explanation / Answer
No. of chromosomes No. of chromatids
1. Prophase of mitosis 46 92
2. G1 phase 46 46
3. Interkinesis/Cytokinesis 46 46
4. Prophase I (Meiosis) 46 92
5. Telophase II 46 46
6. Telophase of mitosis 92 92
7. Metaphase (Mitosis) 46 92
8. Metaphase II 23 46
Prophase of mitosis: 2n no. of chromosomes and chromatids are 4n.(chromosomes condenses in this phase)
G1 phase: Growth phase
Interkinesis/ cytokinesis: Interkinesis or interphase II is a period of rest that cells of some species enter during meiosis, between meiosis 1 and meiosis 2. Here, no DNA replication takes place.
Metaphase: arrangement of chromosomes(2n) in the middle and chromatids 4n.
Telophase of mitosis(n): It is the last step in mitosis. Sister chromatids reach the opposite poles.
Prophase 1: (2n) Chromosomes already duplicated and they become shorter and thicker and 4n chromatids.
Telophase 2: (2n) four daughter cells, each with a haploid set of chromosomes and same no. of chromatids.
Metaphase 2: (n) Chromosomes arranged in the middle and chromatids 2n.