HGG Community Forums

Wellll--maybe not. Only Ammit knows the background programming. :D

Here's another way to look at it.

Every horse (and living being with sexual reproduction, not just cell division like an amoeba) has two copies of every gene and a certain number of paired chromosomes that carry the genes. One chromosome and one member of the gene pair came from the father, and the other chromosome and gene came from the mother.

On the chromosome that determines sex, an x gene produces female characteristics, a y gene produces male characteristics. All female creatures are xx. Male creatures are yx. (The father's contribution to a gene set is often placed first.)

So, every time you breed a stallion to a mare, the stallion has a 50 % chance of passing on a y gene and a 50% chance of passing on an x gene. The mare always passes on an x gene. This means each time there is a 50% chance of getting a colt and a 50% chance of getting a filly. It does NOT mean that half of the foals will be colts and half will be fillies. It's like flipping a penny. There is a 50 % chance of getting heads with every throw, but getting 5 heads in a row does NOT guarantee that the next 5 tries will be tails.

Since chance is involved, sometimes you will get more fillies and sometimes you will get more colts. Here at Hunt and Jump, we would say that you have been visited by the filly fairy. Some season's it's the colt fairy that haunts a stable. :D

Re: real life stallions sometimes only producing fillies. I remember this Arabian who had a live filly guarantee- he overwhelmingly produced daughters. Wish I remembered the dang horse's name! I'd love to know if they ever figured out why.

@KigerBravestone if it was a bug you can post in the Bug Discussion form and Ammit will check it out! If you post that concern as a separate thread you might get more feedback