Key points are not available for this paper at this time.
In a previous review of male gametophyte development (McCormick, 19931), it was noted that the two areas posed by Mascarenhas (1975)2 as fruitful areas for future research were the following. What are the differences in the two cytoplasms that determine the different cell fates of the
Sheila McCormick (Fri,) studied this question.