Cell Cycle and ...

The formation of sister chromatids takes place in which of the following phase?

Which stages of cell division do the following figures A and B represent respectively?

Which is not true for anaphase?

At metaphase, chromosomes are attached to the spindle fibres by their

In an organism, if the normal diploid number of chromosomes is 8, how many chromatids are present in each daughter cell at the end of meiosis I?

Which is synthesized in G$$_{1}$$phase?

A human T lymphocyte in the mitotic metaphase stage will contain how many DNA molecules (exclude the DNA of mitochondria)?

Chromosomes in metaphase get arranged at the equatorial plate (see Fig. 1). When these cells are treated with colchicine, cell division is arrested and the cells never enter anaphase. If we were to compare a colchicine treated cell at metaphase and an untreated cell in the same phase, we notice that chromosomes are more dispersed and do not arrange themselves on the equatorial plate in the treated cells (see Fig 2.).
Using this information, which of the following will be affected by colchicine?

The gametes are formed in most of the multicellular organisms by a process of cell division called as

Assertion : Primary spermatocytes are formed by meiosis-I in the spermatogonia.

Reason : Primary spermatocytes are formed by meiosis-I in the spermatogonia.