Which of these labels for fossils in a museum display contains an error?

a. early human (late cenozoic)
b. early mammals (late triassic)
c. dinosaur (mesozoic)
d. early echinoderms (cambrian period)

answer; a male inherits only one allele of the x-linked gene controlling hair color;

thinking it would be physical characteristics

igneous rocks are formed by solidification of cooled magma (molten rock), with or without crystallization, either below the surface as intrusive (plutonic) rocks or on the surface as extrusive (volcanic) rocks.  

the composition depends on the source magma. there are almost a thousand types of composition found till now.  

hope this