Aparent with blood type a and a parent with blood type b have children with blood type a, b and ab what type of inhertiance pattern is shown by the child with type ab blood and why?

The type of inhertiance pattern shown by the child with type AB blood is called INCOMPLETE DOMINANCE.

Explanation:

INCOMPLETE DOMINANCE is the ability of two contrasting alleles to interact and produce a heterozygous phenotype that is different from the two homozygous phenotype.

According to the principles of Mendel, genes are either dominant or recessive; the dominant expressing itself in homozygous or heterozygous state. i.e., the children should have all with blood type A or type B.

But in the case being discussed, a child with AB does not agree with Mendel's principles all because neither blood type A nor type B is fully dominant over the other, hence, type AB, a different phenotype would emerge

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.