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256
Jaina Biology XY, male, zygote. Since there are equal pumbers of X - and Y - bearing sperm, about equal numbers of each sex are born.'49/a "This XY mechanism of sex dctermination is believed to operate in all species of animals and plants with separate sexes. "50 “In birds and butterflies (Lepidopters ) the mechanism is reversed; males are XX and females are XY. Sex chromosomes have been detected in some plants, notably in the straw-berries, and probably exist in other plants with separate sexes. The members of many species have the organs of both sexes present in each individual. In such organisms, termed 'hermaphroditic,' if animals and monoecious if plants, sex chromosomes have not been found". 51
These hermaphroditic animal monoecious plants without having chromosomes may be compared with the Sammurechima prānīs (animals) and Vanaspatis (plants) without having sperms and egg, and pollens and ovules respectively.
49/a Ibid. 50. Ibid 31. Ibid.
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