In the third step of mitosis, called metaphase, each chromosome lines up in a single file line at the center of the cell. By this point in time, the membrane enclosing the nucleus has dissolved, and mitotic spindles have attached themselves to each chromatid in all the chromosomes.
When a cell has a single line of chromosomes What phase is it in?
Metaphase has the cell’s chromosomes aligned along the equatorial plate (center) of the cell.
What happens to chromosomes Phase 1?
Figure 1: During prophase, the chromosomes in a cell’s nucleus condense to the point that they can be viewed using a light microscope. Prophase is the first phase of mitosis. During this phase, the chromosomes inside the cell’s nucleus condense and form tight structures.
In which phase single stranded chromosome is formed?
In the eukaryotic cell cycle, chromosome duplication occurs during “S phase” (the phase of DNA synthesis) and chromosome segregation occurs during “M phase” (the mitosis phase).
Does chromosome have one line?
A cell has a single line of chromosomes. … If the cell’s DNA weren’t duplicated, then each daughter cell would only get half of a complete set of DNA.
What stage are chromosomes not visible?
During interphase, individual chromosomes are not visible, and the chromatin appears diffuse and unorganized.
What can happen if cells do not duplicate correctly?
The cell cycle controls the four major phases of cell growth and division. … If the cell has not properly copied its chromosomes, an enzyme called cyclin dependent kinase, or CDK, will not activate the cyclin, and the cell cycle will not proceed to the next phase. The cell will undergo cell death.
Is anaphase G1 or G2?
The general steps of meiosis are: interphase (separated into G1, S, and G2 phases), prophase 1, metaphase 1, anaphase 1, telophase 1, prophase 2, metaphase 2, anaphase 2 and telophase 2.
What three phases are individual chromosomes no longer visible?
It is during interphase, telophase, and cytokinesis that the chromosomes are no longer visible.