These arteries supply blood, oxygen, and nutrients to vital brain structures, such as your brainstem, occipital lobes, and cerebellum. A condition called atherosclerosis can reduce or stop blood flow through the vertebrobasilar system. Atherosclerosis is a hardening and blockage of the arteries.
Codominance - A form of inheritance in which both alleles are equally shown. Incomplete dominance - A form of inheritance in which the heterozygous alleles are both exprâ¦essed, resulting in a combined phenotype. One example is seen in some flower colors. A heterozygote with a red and white allele gives pink.
In genetics, codominance occurs when neither gene is dominant over the other. In this case, the traits will both show in the observable characteristics (phenotype).Some examp â¦ les of codominance are: Blood type-Type AB is codominant because both the antigen A and antigen B show up in the genotype.Cats-If a black cat and tan cat mate, the kitten will have both black fur and tan fur.n genetics, codominance occurs when neither gene is dominant over the other. In this case, the traits will both show in the observable characteristics (phenotype).