Is a dogs DNA close to a human DNA?

Answer 1

It is the order that the nucleotides are placed in. Nucleotides are Adenine, Thymine, Guanine, and Cytosine. The nucleotides are almost like the letters of our alphabet. They are the symbols that make up the words and the order determines what organism it will be and how it will function.

Answer 2

Mouse (murine) DNA is more similar to human DNA. The genomes are roughly the same size with a similar number of genes. Dog (canine) DNA has fewer genes than both human and mouse DNA and have fewer similarities. The homology of humans to mice genes is approximately 99% while the homology of humans to dog genes is around 94%.

Answer 3

Define "close."

DNA is, despite the popular image, not really much at all like a blueprint for a complete organism in the sense of having some kind of "image" embedded in it. It's rather a description of how to make the tools, how to cut and treat the wood, how to join two pieces of wood together, and when to stop doing that and start doing something else (in other words, it's not "make the living room 20' square," it's "put boards every 16" until something gets in your way"). (The science word for this is emergent: it's not always clear what the result will be until you actually follow the rules.)

As that analogy suggests, the tools, treatment of the wood, and so forth are going to be pretty similar for both a split-level ranch and a Victorian mansion, even though the two may look wildly different when completed.

Similarly, the basic functions of cells are awfully similar in a dog and in a human... or in a tree, for that matter; they have to know how to replicate their DNA, how to lyse glucose and extract energy from the process, how to build enzymes, and so on. This part of the instructions is going to be more or less identical with minor variations between any two Earthly organisms (life on other planets may, or may not, be rather more different... we don't have any examples yet, so we don't know).

Answer 4

Dogs DNA is more closer to Human DNA