What's the plural form of karyogamy? Here's the word you're looking for.
Answer
The noun karyogamy can be countable or uncountable.
In more general, commonly used, contexts, the plural form will also be karyogamy.
However, in more specific contexts, the plural form can also be karyogamies e.g. in reference to various types of karyogamies
or a collection of karyogamies.
Examples
Karyogamy in the asci is followed immediately by meiosis and the production of ascospores.
For example, in fish, gynogenesis, androgenesis, or karyogamy may result from heterospecific insemination.