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.
This is directly from Wikipedia: Incomplete dominance (sometimes called partial dominance) is a heterozygous genotype that creates an intermediate phenotype. In this case, only one allele (usually the wild type) at the single locus is expressed in a doseage dependent manner, which results in an intermediate phenotype.