DNA (deoxyribonucleic acid) of each kind of animal and plant is so complex that it clearly gives evidence that every species is locked into its own coding pattern. A fantastic blueprint of life. Because of DNA, it is impossible for one species to change into another, since the genes network together so closely. It is a combination lock, and it is shut tight. Only sub-species variations can occur (varieties of plants and breeds of animals).
The helix model of DNA was not discovered until 1953 when Francis Crick and James Watson first wrote on its amazing shape. Each of us starts off as a tiny sphere no larger than a dot that can only be seen with a microscope. Within that microscopic ball there is over 6 feet of DNA, all coiled up. Inside that DNA is the entire code for what you will become, all your organs and all your features. The DNA itself is strung out within long coiling strips. DNA is the carrier of the inheritance code in living things. It is like a microscopic computer with built in memory. DNA stores a fantastic number of “blueprints”, and at the right time and place issues orders for distant parts of the body to build cells and structures.
You have heard of “genes” and “chromosomes” from biology classes at school. Inside each cell in your body is a nucleus. Inside that nucleus are, among other complicated things, chromosomes. Inside the chromosomes are genes. the genes are attached to chromosomes like beads on a chain. Inside the genes is the complicated chemical structure we call DNA. Each gene has a thousand or more DNA units within it. Inside each cell are tens of thousands of such genes, grouped into 23 pairs (46) chromosomes. Man is the only one with 46 chromosomes, all other animals and plants have more or less chromosomes. The odds of accidentally producing the correct DNA code in a species or changing it into another viable species are mathematically impossible.
I believe only God could make DNA, and that without His continual, immediate guidance, the entire DNA reproductive cycle with the cell could not be continued, moment by moment. “I will praise thee; for I am fearfully and wonderfully made; marvelous are thy works; and that my soul knoweth right well.” (Psalm 139:14)
“My substance was not hid from thee, when I was made in secret, and curiously wrought in the lowest parts of the earth. Thine eyes did see my substance, yet being unperfect and in thy book all my members were written which in continuance were fashioned, when as yet there was none of them.” (Psalm 139:15-16)