Most organisms are Diploid, and as a result, they will have received 2 copies of the chromosomes, or sets of chromosomes, from both their parents. This they will have 2 sets of Genes that will perform almost exact same process, except with different phenotypes.
These chromosomes need to be homologous, in order for new alleles and other genetic combinations to be made.
I know that they are hunted with Whale oil
A. the amount of lean muscle in a body
Is this not about a human? We only have one aortic arch
I am sorry but you did not include an attachment of the markings