Examlex
Describe the four typically cited gratifications of grandparenthood.How do middle-aged adults rate their role as grandparents?
Gametic Isolation
A mechanism of reproductive isolation where the gametes (egg and sperm) of different species are unable to fuse or recognize each other, preventing fertilization.
Hybrid Zones
Geographic areas where different species or genetic populations meet and breed, resulting in offspring with mixed characteristics.
Parental Environment
The external conditions and stimuli influenced by parents that contribute to the development and behavior of their offspring.
Rare
Not common or frequent; unusual.
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