Chiasmata are most appropriately observed in meiosis during :
diakinesis
diplotene
metaphase II
pachytene
Colchicine prevents the mitosis of the cells at which of the following stage?
Anaphase
Metaphase
Prophase
Interphase
Which of the following maintain the constant number of chromosomes generation after generation?
Meiosis
Endomitosis
Mitosis
Amitosis
When synapsis is complete all along the chromosome, the cell is said to have entered a stage called
zygotene
pachytene
diplotene
diakinesis
Lampbrush chromosomes are seen in which typical stage
mitotic anaphase
mitotic prophase
mitotic metaphase
meiotic prophase
Which typical stage is known for DNA replication?
Metaphase
G1- phase
S- phase
G2- phase
C.
S- phase
S- phase or Synthesis phase is the phase of the cell cycle in which DNA is replicated. It occurs between G1 and G2 phase.
During this phase, DNA is replicated and histones are sythesized so that each chromosomes becomes two chromatids.
In meiosis division is
Ist reductional and IInd equational
Ist equational and IInd reductional
both reductional
both equational