If the genotype of a punnet square are bb, bb, bb, and bb with the dominant trait representing brown eyes and recessive blue eyes. give the probability of the organism having brown eyes and blue eyes?

All of the combinations have at least one dominant trait (B), so,

Brown eyes=100%

answer:

convection currents in the magma drive plate tectonics. heat generated from the radioactive decay of elements deep in the interior of the earth creates magma (molten rock) in the aesthenosphere. the aesthenosphere (70 ~ 250 km) is part of the mantle, the middle sphere of the earth that extends to 2900 km.