Metaphase is the best stage to count the total number of chromosomes in any species and to establish a detailed study of the morphology of the chromosomes.
What stage of chromosomes is most easily counted and why?
The chromosomes are most easily seen and identified at the metaphase stage of cell division and most of the chromosome images in this gallery are pictures of metaphase chromomosomes.
Which stage of chromosomes is the best counted?
Solution: The number of chromosomes is best counted during metaphase. In metaphase, the centromeres of the chromosomes convene themselves on the metaphase plate an imaginary line that is equidistant from the two centrosome poles.
What phase of mitosis are the chromosomes counted?
Explanation: In anaphase, the pairs of sister chromatids separate and are now individual chromosomes. In anaphase, we can see the individual chromosomes moving to opposite poles of the cell. You can count the chromosomes at this point if you have high enough magnification.
Which stage of mitosis has the most chromosomes?
Metaphase. Next, chromosomes assume their most compacted state during metaphase, when the centromeres of all the cell’s chromosomes line up at the equator of the spindle. Metaphase is particularly useful in cytogenetics, because chromosomes can be most easily visualized at this stage.
At what stage are chromosomes most easily counted and why class 11th?
by Biology experts to help you in doubts & scoring excellent marks in Class 11 exams. Metaphase is the best phase to count total number of chromosomes in any species and detailed study of morphology of chromosome.
How can chromosomes be counted?
It is very simple to count number of DNA molecules or chromosome during different stages of cell cycle. Rule of thumb: The number of chromosome = count the number of functional centromere. The number of DNA molecule= count the number of chromatids.
In which stage the chromosomes that have reached?
Explanation: Mitosis is the process of cell division, and is separated into four stages. During prophase, the chromosomes condense and the nuclear envelope dissolves. During metaphase, the chromosomes align at the center of the cell.
What happens during metaphase stage?
Metaphase is a stage in the cell cycle where all the genetic material is condensing into chromosomes. These chromosomes then become visible. During this stage, the nucleus disappears and the chromosomes appear in the cytoplasm of the cell.
What happens in G1 phase?
G1 phase. G1 is an intermediate phase occupying the time between the end of cell division in mitosis and the beginning of DNA replication during S phase. During this time, the cell grows in preparation for DNA replication, and certain intracellular components, such as the centrosomes undergo replication.