Answer:
atomic number is 4 and neutron is 12
During metaphase 1, the spindle fibers attach to the centromeres of each chromosome. Both kinetochores of each sister chromatid pair are turned toward the same pole. And 2 members of each chromosome pair (sister chromatids) are pulled into each new cell during anaphase 1.
I think the answer you want is they are called chromatids.
They swam faster and learned to hide
Execration in man
transport and gutation in plant
Heterotrophs is the answer