Join Date: May 2008
Location: St. Albert, AB, Canada
My vote is 1:1 as well. Top kitten looks like a girl and bottom kitten is definitely a boy.
If you look at the pictures you'll see the top is sort of like this: ; - a dot and a line, with them being fairly close together. This indicates female.
The bottom picture shows two dots: : with a space between. This is a male, and his testicles are just starting to come in.
In some species the testicles are undesended (sp?) and have to 'drop' as the animal matures. Kittens are like this, with the testicles usually making an appearance around 3-4 months. They become more prominent and obvious until they are very apparent at sexual maturity around 2 years.
In you boy, second picture, you can just make out two little bumps right next to the bottom dot - that's his testicles beginning to develop.