Answer:
-Option (d).
Explanation:
BFB (breakage-fusion-bridge) cycle can be defined as a mechanism associated with chromosomal disabilities. The breakage-fusion-bridge cycles are associated with tumorigenesis as it induces chromosomal abnormalities in cells.
It starts with breakdown of chromosomal end region (telomere). When that chromosome goes for replication, daughter chromatids formed by it lack telomere.
During anaphase, fused chromosomes get separated and each daughter cell gets a chromosome without telomere. These mutated daughter cells replicate again and as this process rerun, it can lead to accumulation of chromosomal instability and tumor formation.
Thus, the correct answer is option (D).
Answer:
True
Explanation:
Without them Earth would stink. Literally. And Soil is important to all plants.
Answer: neurotransmitters
Explanation:
The neurotransmitters are the chemicals which are released at the synaptic cleft or synapse present between the two neurons. These are the chemical messengers which carries the signals from one neuron to other and helps in transmission of the information. The chemical molecules of the neurotransmitters usually diffuse across the synaptic cleft and they bind to the receptors of the postsynaptic cells.
It happens due to the inner resistance. Resistance causes heating of tungsten filament and with more resistance, a light bulb produces more light.