Genetics
![](/Images/godic/202502/12/Myoglobin1455.png")
![DNA, the molecular basis for biological inheritance. Each strand of DNA is a chain of nucleotides, matching each other in the center to form what look like rungs on a twisted ladder.](/Images/godic/202502/12/DNA_Overview21455.png")
![Morgan's observation of sex-linked inheritance of a mutation causing white eyes in Drosophila led him to the hypothesis that genes are located upon chromosomes.](/Images/godic/202502/12/Sexlinked_inheritance_white1455.jpg")
![A Punnett square depicting a cross between two pea plants heterozygous for purple (B) and white (b) blossoms.](/Images/godic/202502/12/Punnett_square_mendel_flowers.svg1455.png")
Genetics is the study of genes, genetic variation, and heredity in living organisms. It is generally considered a field of biology, but it intersects frequently with many of the life sciences and is strongly linked with the study of information systems.