Question

Given the idea that male expressed drive systems like sex-ratio X chromosomes, though favored by gametic selection, may have costs with respect to other fitness components. Alternatively, the fitness costs associated with female?expressed drive may be less obvious. What basic difference between male and female meiosis may explain some of the difference in the fitness costs of drive in males vs. females (all else being equal) ?

Answer 1

it is widely assumed that women have higher costs of reproduction than men because of enduring pregnancy, childbirth, and lactation, but evidence is lacking. Studies on women show that high parity and low birth spacing are associated with reduced health , postreproductive survival, and offspring quality. The evidence supports the idea that women incur greater reproductive costs than men. Increasing parity affected the survival of couples during the first year and the first five years after the completion of childbearing. Women are thought to be more choosey about sexual partners than men because of their greater investment into reproduction. when seeking potential mates, women emphasize social status, economic resources, and parental investment, whereas men emphasize youth, waist-hip ratio, and other indicators of high reproductive value

In men meiosis takes place in seminiferous tubules whereas in females it take place in oogonia.