When you get into the heterozygous stuff ou are simply dealing with the morph traits. If a trait is "het" it means it is carrying the recessive gene for the particular trait. So if it is for example het. green...then you breed with a green burmese you will get some green burmese offspring. We can explain this using an example like the gene for green urmese pythons is g and the gene for normal (regular) burmese pythons is N. If you were to breed a green burmese to a normal burmese you ould get a few difernt things in the clutch, but all would have g and N (Ng). This would mean all are 100% het. for the green gene. They all carry the gene for this trait but none will express it. It is not until you can have animals with two g's will you see the particular morph (gg). If you breed two green burmese pythons their genes will be gg and all the babies will be green burmese. This is a diluted example but it should help you understand. It is when you start breeding the "hets" with the greens or the normals when you start to get the percentages. Since you cannot tell if a normal looking snake has the gene to be a green you have to go by percentages. If a 100% het green is bred to a green you will get 25% greens, 25% normals, and 50% het. greens. Since you cannot distinguish the normals from the hets...you consider all the normal looking babies to be 66% possible hets. If you had a 100% het. green bred to a 100% normal, all the babies would look normal, but half of them should be het. for green. In this case you call them all 50% possible het. green. I hope this helps. I know it can be confusing but if you have more questions please feel free to ask.

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