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. As mitotic cells are easy to obtain, morphological studies are generally based on mitotic metaphase chromosomes.
Which phase of mitosis is best suited for counting the number of chromosomes?
Metaphase is the best stage to count the number of chromosomes and study their morphology.
Which is the best stage to count chromosomes?
So from the above point it’s clear that metaphase is the best stage to study the morphology of chromosomes. Hence, the correct option is Metaphase (B).
At what stage are chromosomes most easily counted 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.
What stage does G1 S and G2 phases happen?
Interphase is composed of G1 phase (cell growth), followed by S phase (DNA synthesis), followed by G2 phase (cell growth). At the end of interphase comes the mitotic phase, which is made up of mitosis and cytokinesis and leads to the formation of two daughter cells.
What is metaphase?
Metaphase is the third phase of mitosis, the process that separates duplicated genetic material carried in the nucleus of a parent cell into two identical daughter cells. … There is an important checkpoint in the middle of mitosis, called the metaphase checkpoint, during which the cell ensures that it is ready to divide.
Which of the following stage is most convenient to count the number of chromosomes in a cell?
Metaphase is the best time to count and study the number and morphology of chromosomes.
Which phase occupies the maximum part of cell cycle?
During interphase, the cell undergoes normal growth processes while also preparing for cell division. It is the longest phase of the cell cycle, cell spends approximately 90% of its time in this phase.
What is mitosis write metaphase stage?
A stage of mitosis in the eukaryotic cell cycle in which chromosomes are at their second-most condensed and coiled stage is known as metaphase. Carrying genetic information, aligned in the equator of the cell before being separated into each of the two daughter cells is being done with these chromosomes.
What is G1 G2 and S phase?
G1 phase is the first stage of interphase which is considerably a longer process. S phase is the middle phase in which the cell makes an extra copy of its chromosome set. G2 phase is the last stage of interphase which is relatively a short phase.
What is the difference between G1 and G2 phase?
G1 phase is the first phase of the interphase of the cell cycle in which cell shows a growth by synthesizing proteins and other molecules. G2 phase is the third phase of interphase of the cell cycle in which cell prepares for nuclear division by making necessary proteins and other components.
What does the S phase stand for?
The S stage stands for “Synthesis”. This is the stage when DNA replication occurs. The G2 stage stands for “GAP 2”. The M stage stands for “mitosis”, and is when nuclear (chromosomes separate) and cytoplasmic (cytokinesis) division occur.