The primary role of DESMOSOME is to blind animal cells together. It is the formation of a structure from protein plaques in the cell membranes linked by filaments. This links to a the protein that is attached to the cell surface adhesion.
Sickle cell disease is a hereditary disease seen most often among people of African ancestry. Caused by mutations in one of the genes that encode the hemoglobin protein, the disease is inherited as an autosomal recessive trait.
I believe it should match as the following...
sight in whales -----> eyeballs in cavefish
balance in monkeys -----> tailbone in humans
attachment point for limbs in frogs -----> pelvis bone in whales
The difference between a dominant trait and a recessive trait is that the dominant trait must have one copy of each from two different parent
Example: Brown Hair=H
Light hair=h
Hh is dominant because this is of a copy of each from two parents
A recessive trait must have two same copies coming from the same two parents
Example: HH
<span>Formation of bivalents lead to spindle fibers from opposite poles attaching to homologous chromosomes.
Hope this helps!!</span>