The claim is not valid because the clone can only be one gender. For instance, let's say the original guinea pig was male. The only way that the guinea pig offsprings are its clones is when the genetic data are IDENTICAL. It obviously isn't identical when there are two different genders.
For cells that are larger, nutrient intake and waste elimination takes a longer time due to the larger distance that must be covered by the same transport processes as the ones taking place in smaller cells. Shapes that maximize surface area help increase the rate of nutrient uptake and waste elimination.
Ovulation is when the ovaries release ovules, which happens during the middle of the menstrual cycle, hope this helps!