The nuclear membrane in a mitotically dividing cell remains intact up to the metaphase and disappears only in the telophase.

Mention whether the following statements are true (T) or false (F). Give reason in support of your answer.

Mitotic cell division can be a mode of reproduction.

Mention whether the following statements are true (T) or false (F). Give reason in support of your answer.

Crossing-over between chromatids can occur only between homologous chromosomes.

Define the following term :

Chromosome.

Define the term Gene.

Define the term Cell division.

Define the following terms :

Chromatid.

Define the following term.

Aster

Give reason:

Gametes must be produced by meiosis for sexual reproduction.