Substances that cause DNA mutations are known as mutagens, and mutagens that cause cancers are known as carcinogens. Particular substances have been linked to specific types of cancer. Tobacco smoking is associated with many forms of cancer, and causes 90% of lung cancer.
Human diploid cells have 46 chromosomes and human haploid gametes (egg and sperm) have 23 chromosomes. Retroviruses that contain two copies of their RNA genome in each viral particle are also said to be diploid.
Best Answer: Sperm and egg cells have 23 chromosomes. This is the haploid number for human gamete cells. Once they are joined and the egg is fertilized the diploid number is restored back to 46 chromosomes.White blood cells and all other human cells should have 46 chromosomes.ametes (sperm & egg Cells) will alwyas have 23 chromosomes, as they will form one half of the pair (2N=46) when they fuse to produce an offsrping.