The DNA of a cell condenses to form chromosomes during cell division or mitotis, called the M phase of the cell cycle. Specifically, chromosomes acquire their characteristic X shape in the metaphase stage of mitotis. Each chromosome consists of two sister chromatids joined at the centromere.
Chromosomes are not visible during the interphase stage of the cell cycle when they are in their less condensed form. Additionally, chromosomes may not be visible if the cell is not actively dividing or if they are not stained for observation under a microscope.
Prophase.
During prophase of mitosis, DNA condenses and coils into visible chromosomes. This phase marks the beginning of the cell division process, where chromosomes pair up and become more distinguishable under a microscope.
During the interphase of the cell cycle, chromosomes are not individually visible. Instead, they are uncoiled and spread throughout the nucleus as chromatin. This phase is focused on growth, organelle replication, and preparing for cell division.
Prophase
Interphase as they become decondenced
Interphase as they become decondenced
Chromosomes are not visible during the interphase stage of the cell cycle when they are in their less condensed form. Additionally, chromosomes may not be visible if the cell is not actively dividing or if they are not stained for observation under a microscope.
Prophase
The phase of cell division when duplicated chromosomes first appear is called the prophase. In prophase, the chromatin condenses into visible chromosomes, and the nuclear envelope breaks down, allowing the chromosomes to be more clearly visible.
Prophase.
They first become visible during prophase of mitosis.
During prophase of mitosis, DNA condenses and coils into visible chromosomes. This phase marks the beginning of the cell division process, where chromosomes pair up and become more distinguishable under a microscope.
During the interphase of the cell cycle, chromosomes are not individually visible. Instead, they are uncoiled and spread throughout the nucleus as chromatin. This phase is focused on growth, organelle replication, and preparing for cell division.
Prophase
Visible in prophase and attach to spindle fibers in meta phase
The second phase of mitosis is called prophase. During prophase, chromosomes condense and become visible as distinct structures. In addition, the nuclear membrane starts to break down, allowing the chromosomes to move freely within the cell.