In cats, the sex of the offspring is determined by the inheritance of sex chromosomes XXX and YYY in the same way as in humans.
Female Gamete 1Female Gamete 2Male Gamete 1Offspring AOffspring BMale Gamete 2Offspring COffspring D\begin{array}{c|cc} & \text{Female Gamete 1} & \text{Female Gamete 2} \\ \hline \text{Male Gamete 1} & \text{Offspring A} & \text{Offspring B} \\ \text{Male Gamete 2} & \text{Offspring C} & \text{Offspring D} \end{array}Male Gamete 1Male Gamete 2Female Gamete 1Offspring AOffspring CFemale Gamete 2Offspring BOffspring D
Identify:
The genotypes of the female gametes and male gametes.
The genotypes of offspring A, B, C, and D.
A female cat has a litter of 888 kittens. Explain why there might be 555 female and 333 male kittens, rather than exactly 444 of each.