Analyse the events during every stage of cell cycle and notice how the following two parameters change
(i) Number of chromosomes (N) per cell
(ii) Amount of DNA content (C) per cell Answer

The amount of DNA per cell remains same during

During cell cycle, every chromosome contains two DNA molecules from

Name the stage of cell cycle at which one of the following events occur: (i) Chromosomes are moved to spindle equator (ii) Centromere splits and chromatids separate (iii) Pairing between homologous chromosomes takes place (iv) Crossing over between homologous chromosomes takes place

The following events occur during the various phases of the cell cycle. Fill in the balnks with suitable answer against each. a) Disintegration of nuclear Membrane b) Appearance of Nucleolus c) Division of centromere d) Replication of DNA

Mitosis result in producing two cells which are similar to each other. What would be the consequence if each of the following irregularities occurs during Mitiosis ? a) Nuclear membrance fails to disintegrate b) Duplication of DNA does not occurs. c) Centromeres do not divide d) Cytokinesis does not occur.

During which phase(S) of cell cycle, amount of DNA in a cell remains at 4C level if the initial amount is denoted as 2C?

Accourding to weismann prediction , every organism undergoes two kinds of cell divisions. In mitosis, there is no change in chromosomal number (2n) and in Meiosis, chromosomal number is reduced to half (n). (ii) In which cells, Meiosis takes place ?

During which phase (s) of cell cycle, amount of DNA in a cell remains at 4C level if the initial amount is denoted as 2C?

Accourding to weismann prediction , every organism undergoes two kinds of cell divisions. In mitosis, there is no change in chromosomal number (2n) and in Meiosis, chromosomal number is reduced to half (n). (iv) Which type of cell division occurs in the skin cells ?

Accourding to weismann prediction , every organism undergoes two kinds of cell divisions. In mitosis, there is no change in chromosomal number (2n) and in Meiosis, chromosomal number is reduced to half (n). (i) What does 'n' and '2n' indicate ?