According to the order from smallest to largest, the order will be: Nucleotide, Gene, DNA, Chromatin, Chromatid, Chromosome.
The area was once covered by sea, mountains, deserts, and coastal plains.
Answer:
23 Chromsomes
Explanation
Thus, if a skin cell or somatic cell contains 46 chromosomes then the egg or sperm (gametes) would contain only 23 chromosomes