Genetics is a discipline of the Biological sciences that studies personal traits the human or living organism inherits from its ancestors through genes and Embryologystudies the development of the fertilized embryo from the ovum to the fetus stage. Embryology is defined as the branch of biology and medicine that studies embryos and how they develop. The study of how human embryos develop from fertilization to birth is an example of embryology.
Human genetics is the study of heredity as it occurs in humans. Human genetics encompass a wide variety of overlapping fields, including classical genetics, cytogenetics, molecular genetics, biochemical genetics, genomics, desi genetics Genes are the common trait of most traits of inherited humans. The study of human genetics can answer the questions about human nature, can help us understand disease and the development of an effective treatment for the disease, and help us understand the genetics of human life. This article describes only the basic functionality of human genetics; for disorders of genetics, see: medical genetics.
Early embryology was proposed by Marcello Malpighi, and known as preformationism. The theory that organisms develop from pre-existing miniature versions of themselves. Then Aristotle proposed the theory that is now accepted, epigenesis. Epigenesis is the idea that organisms develop from seed or egg in a sequence of steps. Modern embryology developed from the work of Karl Ernst von Baer, though accurate observations had been made in Italy by anatomists such as Aldrovandi and Leonardo da Vinci in the Renaissance. Evolutionary embryology is the expansion of comparative embryology by the ideas of Charles Darwin. Similarly to Karl Ernst von Baer's principles that explained why many species often appear similar to one another in early developmental stages, Darwin argued that the relationship between groups can be determined based upon common embryonic and larval structures.