Answer
the correct option is C, because both DNA and RNA contain nucleotide which is composed of three components:
1. Phosphate group
2. Nitrognous base
3. Pe tose sugar
Twins share the same genes, but siblings born at different time does not share the same genes.
Osteoporosis, which literally means porous bone, is a disease in which the density and quality of bone are reduced. As bones become more porous and fragile, the risk of fracture is greatly increased. The loss of bone occurs silently and progressively.
