Assertion :- Morphology of chromosomes is most studied during metaphase of cell division.
Reason :- Complete disintegration of nuclear envelope marks the start of metaphase, second phase of mitosis.

Read the following statements (a) Complete disintegration of the nuclear envelope marks the start of the second phase of mitosis. (b) Metaphase chromosome is made up of one sister chromatid

Read the following statements (a) Complete disintegration of the nuclear envelope marks the start of the second phase of mitosis. (b) Metaphase chromosome is made up of one sister chromatid

A : The complete disintegration of the nuclear envelope marks the start of metaphase. R : Chromosomes are distinct with two chromatids at this stage.

A : The complete disintegration of the nuclear envelope marks the start of metaphase. R : Chromosomes are distinct with two chromatids at this stage.

Read the following statement and choose the correct option spindle fibres get attached to the kinetochore of the chromosomes during metaphase. At the end of prophase cells do not show golgi complex, endoplasmic reticulum, nucleolus and the nuclear envelope. At anaphase centromere splits but chromatids do not separate.

Read the following statement and choose the correct option spindle fibres get attached to the kinetochore of the chromosomes during metaphase. At the end of prophase cells do not show golgi complex, endoplasmic reticulum, nucleolus and the nuclear envelope. At anaphase centromere splits but chromatids do not separate.

Statement (s) Nondisjunction is the failure of paired chromosomes to segreagate during the metaphase of meiotic division of fametogenesis Reason (R ) Non disjunction results in production of abnormal gametes

In eukaryotes, the process of division of a somatic parent cell into two daughter cells is known as mitosis. During the M or mitosis phase of a cell cycle, the chromosomes present in the nucleus are separated into two identical sets, which eventually form two daughter nuclei. This is followed by cytokinesis. Onion root tips are most commonly used to observe the different stages of mitosis in the laboratory. Each onion cell contains a total of eight chromosomes. DNA specific stains are used to visualise these chromosomes in different phases of mitosis. Name the stain that can be used to observe the different phases of mitosis.