Chromosomal means that it belongs to the chromosome. Chromosomes are part of the cell nucleus. They are made of DNA carrying the genetic information.
Chromosomal refers to chromosomes. Chromosomes contain DNA, which transmits genetic information. They are located in the nucleus of both plant and animal cells. In humans there are 46 chromosomes.
Relating to a rod-shaped structure in a cell nucleus that carries the genes that determines sex and the characteristics an organism inherits from its parents.