Hat is the significance of the evolution of hox gene clusters during vertebrate evolution?
a. novel hox genes coded for novel vertebrate features, such as jaws, limbs, and large brains.
b. duplicate hox genes triggered the formation of neural crest cells and allowed them to disperse throughout the body, forming a variety of structures.
c. duplication of hox genes made increased morphological complexity possible.

b ti isnfornopgnoernfrof

characteristics of hydrocarbons

osteogenesis imperfecta (oi) refers to a congenital ailment of bones. in the condition, the bones become brittle or fragile. this ailment is a general result of the defect or mutations in the genes (colia1 or colia2). this mutation results in imperfect collagen formation either in quantity or quality wise.  

there are eight kinds of oi defects, and each kind varies with certain distinctions in symptoms. the usual symptoms include frequent bone fractures, loss of hearing in infants, protruding eyes, discoloration of the white in the eyes, respiratory issues, loosening of the joints, short stature, and other symptoms.  

i would think a oil tanker that has leaked in a bay