Sperm of an animal species ‘X’ is unable to fertilize the egg of ‘Y’ because
(a) fertilisin of ‘X’ and ‘Y’ are not compatible
(b) antifertilisin of ‘X’ and ‘Y’ are not compatible
(c) fertilisin of ‘X’ and ‘Y’ are not compatible
(d) antifertilisin of ‘X’ and ‘Y’ are not compatible.
(e) none of the above
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I think it's option C
hope this may help you...
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Here is your answer~
option (c)
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