Which of these choices best describes a pedigree? a diagram of family relationships that includes several generations
a hypothesis that explains why genes are recessive or dominant
a diagram that lists alleles of two parents and shows the possible allele combinations of their offspring

an illustration that shows the genetic diversity among different species

Pegmatites are igneous rocks in which the individual minerals are very large. typically, the minerals are all light-colored quartz, feldspar and muscovite. if you were given a black and white photograph of a pegmatite in a quarry (where the rock has been blasted and broken), what physical properties could you use to identify those three minerals in this hypothetical photo? describe each mineral and the specific diagnostic properties. be specific.