A father is heterozygous for H substance gene, and he has type AB blood (IAIB Hh). A mother is heterozygous for H substance gene, and she has type B blood (IBIB Hh). What will be the phenotypic ratio of the children of this couple

all these collisions do one thing, and that thing is explained in the last option. when dusst, rocks and ice collide, they harden and form giant layers of rocks or hard ice.

d)   to harden materials to form different parts of earth’s layers

hope it ,

bioteacher101

it should be d) transitional fossils.

they show the gradualism of evolution throughout a period of time