Cell Cycle and Cell Division

During the cell cycle, DNA content is doubled in the

• G₁ phase

• S phase

• G₂ phase

• end of M phase

Colchicine prevents the mitosis of the cells at which of the following stage?

• Anaphase

• Metaphase

• Prophase

• Interphase

The term 'Meiosis' was given by

• Johansen

• Knoll and Ruska

• A. Flemming

• Farmer and Moore

Lampbrush chromosomes are seen in which typical stage

• mitotic anaphase

• mitotic prophase

• mitotic metaphase

• meiotic prophase

When synapsis is complete all along the chromosome, the cell is said to have entered a stage called

• zygotene

• pachytene

• diplotene

• diakinesis

In meiosis division is

• Ist reductional and IInd equational

• Ist equational and IInd reductional

• both reductional

• both equational

Chiasmata are most appropriately observed in meiosis during :

• diakinesis

• diplotene

• metaphase II

• pachytene

Which typical stage is known for DNA replication?

• Metaphase

• G₁- phase

• S- phase

• G₂- phase

Which is synthesized in G₁ phase ?

• DNA polymerase

• Histones

• Nucleolar DNA

• Tubulin protein

Which of the following maintain the constant number of chromosomes generation after generation?

• Meiosis

• Endomitosis

• Mitosis

• Amitosis