The gene may or may not be expressed during the 5 steps of neutral selection based on if the gene is dominant or recessive.
Answer: According to international conventions, human autosomes, or non-sex chromosomes, are numbered from 1 to 22, in descending order by size, with the exceptions of chromosomes 21 and 22, the former actually being the smallest autosome. The sex chromosomes are generally placed at the end of a karyogram.
Answer: Crab, because an arthropod has no spine but an external skeleton.
D. specialize cells perform specific functions in the body