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Page 375
Similarly on the male side , there may be an addition of organs which make the
fertilisation of the eggs less fortuitous or the insemination of the females more
effective . The seaurchins have only the essential reproductive organs or gonads
...
Similarly on the male side , there may be an addition of organs which make the
fertilisation of the eggs less fortuitous or the insemination of the females more
effective . The seaurchins have only the essential reproductive organs or gonads
...
Page 382
( 6 ) In some cases it seems as though the bias of eggcells towards female -
production or male - production is not irrevocably settled from the first , but can be
swayed to one side or the other for some brief period , e . g . by the relative
ripeness ...
( 6 ) In some cases it seems as though the bias of eggcells towards female -
production or male - production is not irrevocably settled from the first , but can be
swayed to one side or the other for some brief period , e . g . by the relative
ripeness ...
Page 397
Then there are strange cases like the Phalaropes , where the female does the
courting and the male the brooding , or where one and the same animal , like the
Hagfish , is first male and then female . In short , there is extraordinary variety in ...
Then there are strange cases like the Phalaropes , where the female does the
courting and the male the brooding , or where one and the same animal , like the
Hagfish , is first male and then female . In short , there is extraordinary variety in ...
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