postzygotic isolation
Technical term in evolutionary biology; refers to reproductive isolation mechanisms that act after fertilization, such as hybrid inviability or sterility. Compare with 生殖的隔離 (reproductive isolation).
See also: 生殖的隔離
Mule sterility is often cited as an example of postzygotic isolation.
生殖的隔離 is the broader term for reproductive isolation, which includes both prezygotic and postzygotic mechanisms. 接合後隔離 specifically refers to the postzygotic subset.
Compound of 接合 (せつごう, 'fertilization' or 'conjugation') + 後 (ご, 'after') + 隔離 (かくり, 'isolation'). The term is a direct calque of the English 'postzygotic isolation'.