#nighlights

So I’ve been thinking about this for a while now, and I just found it really interesting. I’m only in like yr 11 biology so I really don’t know a whole heap XD. This is just something I thought might work.

So, first of all, I researched and found that the colour of the coating, or skin on many animals a monogenic trait, meaning it is controlled by a single gene. That is unlike humans who have many different shades of skin colour, not just black or white due to it being controlled by many genes. From this, I think we can assume that the colour of Night Furies and Light Furies is monogenic as there is only black or white and no in-between.

So then if we only look at the colour gene for the Furies, we can call the complete black coat BB (aka Night Fury), and complete white coat WW (aka Light Fury.) Now looking at the Nightlights, since they display colours from both parents without any blending, we can assume that the alleles for black and white colour are co-dominant. Then we would give the colour of Nightlights the symbol BW.

Before I go on, for anyone who is not familiar with pedigree charts, the squares represent males and circles represent females.  

A horizontal line between a male and female represent marriage or mates. Lines that stem from that horizontal line represent their offspring.

And the key below shows which colour each individual displays.

Let’s begin...

This is the overall pedigree I made which I will break down in a sec.

So first of all, we know that Toothless is the last Night Fury, but he and the Light Fury had had three baby Nightlights. Those three will obviously never meet another Night Fury and it is unclear whether dragons inbreed. However, there are many more Light Furies for them to mate with which is shown with Nightlights 1 and 3.

If a Nightlight and Light Fury are crossed in this example there is a 50% chance of producing a Nightlight and 50% chance of producing a Light Fury.

And if we assume that Nightlight 3 also crossed with a Light Fury, they would also have a 50% chance of having another Nightlight.

Then if we cross the two Nightlight offspring from the original Nightlights...

There is a 25% chance of having a Night Fury...

😍NIGHTLIGHTS😍

🖤💟Ruffrunner/Pouncer/Dart🖤💟

Crystal Dragon / Dragon Egg Nightlights

Dan Wall on Etsy