The more the silica content and the more the vicious the dissolved gases, the more explosive a volcano will be.
When there is more silica forces magma to rise and come together with ashes, gas. More silica+ higher viscosity=greater explosion.
Guanine does not pair with Thymine. In a DNA strand, adenine (A) pairs with thymine (T), while guanine (G) pairs with cytosine (C). Therefore, that must mean there was a problem or a mistake with the duplication of the strand.
The hemoglobin holoenzyme (active enzyme) is a complex of an iron ion and 4 subunits- 2 hemoglobin alpha and two hemoglobin beta. People with sickle cell disease have mutated beta hemoglobins. The mutation is a single nucleotide exchange, that changes the 6th amino acid of protein primary struture - a Glutamic acid into Valine. This one alteration changes the tree dimentional structure of hemoglobin beta so, that it forms lond fibres that disrupt the normal circular form of the red blood cells.
