What is the phenotypic sex of a person who has. 1) XY with the SRY gene deleted. 2) XX with a copy of SRY on an autosome. 3) XXY with the SRY gene deleted. 4) XXYY with ONE copy of the SRY gene deleted. 5) male.
The continental crust is made of granitic rocks, which have even more silicon and aluminum than the basaltic oceanic crust; they also have more oxygen thanks to the atmosphere. Granitic rocks are even less dense than basalt. In terms of minerals, granite has even more feldspar, less amphibole than basalt and almost no pyroxene or olivine, plus it has abundant quartz. In geologist's shorthand, continental crust is felsic.
The oceanic crust lies atop Earthâs mantle, as does the continental crust. Mantle rock is composed mostly of peridotite, which consists primarily of the mineral olivine with small amounts of pyroxene and amphibole. Investigations of the oceanic crust. Knowledge of the structure and composition of the oceanic crust comes from several sources.