No it is not i have to write more that 20 character
My Answer: <span>All vaccines create immunity by introducing a substance that triggers the body's immune system to react and produce antibodies, but not all vaccines are the same. Some are made with live viruses or bacteria that have been greatly weakened. Others are made with bacteria or viruses that have been killed. And still others use only specific parts of the bacteria or viruses to stimulate the body's defenses.
Hope I helped! :D</span>
A chromosome is made up two chromatids that are joined in the centromere. Chromatids will separate during mitosis to create brand new chromosomes.
