With each cell division , the chromosomes are divided between 2 daughter cells, yet the number of chromosomes in each cell does not change. What process ensures that the normal number of chromosomes is restored after each cell division? During which part of the cell cycle does this process occur?
Is it Cytokinesis? And the end of the cell cycle? Please help me. Thank you!
What is the same evry time it is formed in a organisim?
Yes! It is ctokinesis at the end of the cell cycle.
The process that ensures the normal number of chromosomes is restored after each cell division is called "DNA replication." During DNA replication, the two strands of a DNA molecule separate, and each strand serves as a template for the synthesis of a new complementary strand. This results in two identical copies of the DNA molecule, each containing the same number of chromosomes as the original cell.
Cytokinesis is a different process that occurs after DNA replication and is responsible for the physical separation of the two daughter cells. Cytokinesis divides the cytoplasm and other cellular components between the two daughter cells, but it does not directly affect the number of chromosomes.
To clarify, DNA replication occurs during the "S phase" (Synthesis phase) of the cell cycle, which is part of the interphase. Interphase is the period between cell divisions, and it consists of three phases: G1 phase (Growth phase 1), S phase, and G2 phase (Growth phase 2). After interphase, the cell enters the "M phase" (Mitosis phase or cell division phase), where both DNA replication and cytokinesis occur.
Regarding your second question, it seems there may be some confusion in the context. Without additional information, it is difficult to provide a specific answer. Can you please provide more details or clarify what "it" is referring to in the organism?