1. The gene and chromosome
In genetics to control nature (genetic unit) controls a creature with the shape and characteristics of the species, according to the parents' genes, so-called gene therefore acts. Control the transmission characteristics Genetic characteristics are transmitted to the grandchildren to find some way that does not occur in children, but may appear. Grandchildren or great-grandchildren may have resulted in a different genotype. It resulted in a live birth, but a collection of diverse genetic causes of many species. The races have been held to date. Most creatures, each composed of a different gender is male and female. I happening It was developed from the cells of male sperm (Sperm) and the female egg cell (Egg) gathered a zygote Zygote reproduction process by the gene from both parents to be. Taking a child with such a process. Later on it was discovered in the year 2423 therefore cytoplasmic staining was observed in the nucleus are structures called chromosomes line is such dyes allow scientists to track. Changes in chromosomes as the cell divides. And make known Cell division in two ways.
Mitosis and cell division (Mitosis), which found that this process occurs at the cellular genome are all the same.