Intersexual contests for territories may require females to match males in their resource holding potential.
Signal partitioning in Syros females may be caused by the relatively high population density on the island and the ensuing high level of sexual competition, which may require females to use signals to compete for and/or attract the best males (Marshall K, personal observation).
Thus, as Public Citizen put it, "an employer may require its female workers to be sterilized in order to reduce employer liability for harm to the potential children".
Adult females may require more food than adult males since the energy cost of reproduction for female mammals (gestation, lactation, offspring rearing) is higher than that for males (mate acquisition and resource defence; [18]).
That's because males and females may require different amounts of energy to raise, or because one sex may be a better bet for passing on genes.
Normalization of adiposity in female infants may require different strategies, and there is a need for continuing research in this area.
The anteriorly restricted, female rhabdosphincter may require a static ligament-dependent lateral support (i.e., the perineal membrane; see below in Section 2.2.6), in contrast to the dynamic muscle-dependent support in males.
The entire process for male-to-female reconstructive surgery may require two or more operations, plus regularly scheduled assessments and checkups over a period of years; hormone treatment continues for life.
Because uncastrated males (bucks) cannot be kept with females (does), this may require purchasing more than two goats.
Adhesions may cause acute abdomen by bowel obstruction and female infertility, and patients may require reoperation.
