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

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.

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

Answer the following questions regarding the events carried out in the labelled parts of the ab ove given diagram. (1) DNA synthesis occurs in (2) Condenstaion of chromosomal material takes place in (3) Attachement of spindle fibres to kinetochores of chromosomes during (4) Initiation of the assembly of mitotic spindle during (5). Splitting of centromere and separation of chromatids in (6) Movement of chromatids to opposite poles during (7) Reformation of nucleolus, Golgi complex and ER occurs in (8) Alignment of chromosomes along metaphase plate during (9) During of cytoplasm during (10) Preparation of cell division takes place during.

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

The following events occur during the various phases of the cell cycle. Name the phase against each of the events. (a) Disintegration of nuclear membrane ....... (b) Appearance of nucleolus ......... (c) Division of centromere ....... (d) Replication of DNA ........

A cell has 32 chromosomes. It undergoes mitotic division. What will be the chromosome number (n) during metaphase ? What would be the DNA content (c) during anaphase ?

During which phase(s) of cell cycle, amount of DNA in a cell remains at 80C level. If the initial amount is denoted as 4C ?

Identify the wrong statement about meiosis (A) Pairing of homologous chromosomes (B) Four haploid cells are formed (C) At the end of meiosis the number of chromosomes are reduced to half (D) Two cycle of DNA replication occurs