You cant make your own DNA, you use certain enzymes to get the part of the DNA that you want to use in genetic engineering.
You cannot make your own breed (howrse introduces new ones into the game every so often) but you can cross any types of breeds that you want, ending up with horses with numerous bloodlines.
mitochondria
No, you can't make your own breed. They have a ton of different breeds in stock for you. You can unlock new breeds by having a lot of trainer points. But there is a weimeraner breed you have to use the jack Russel to find a really rare hankerchief only the jack Russel can find it though
So then the cell can split the replicated DNA into to nuclei and then form two separate cells, each with their own nucleus and own set of DNA.
Make your own
It is impossible to make your own PokeMon and put it in the game. You can breed PokeMon if that's what you ment.
The Pekinese is it's own Chinese breed. They arn't what you call a 'mix-breed' or 'hybrid'
The nucleus and the mitochondria are the 2 cell parts that contain DNA. DNA is located in the nucleus of eukaryotic cells, while mitochondria have their own separate DNA known as mitochondrial DNA (mtDNA).
its a breed on its own. you can not take a rex or lionhead and just "make" a loop bunny.
Mweor.com is a website that you can make your own breed of cat,breed more,and it's free and fun! I'm currently a member(Spottedstar).
Goats and deer can breed with their own kind but they can't interbreed as they have different genetic make-up and are different species.
Unlike living things a virus does not make or use genetic material such as DNA. Viruses do not create their own DNA.