What's the plural form of allotetraploidy? Here's the word you're looking for.
Answer
The noun allotetraploidy can be countable or uncountable.
In more general, commonly used, contexts, the plural form will also be allotetraploidy.
However, in more specific contexts, the plural form can also be allotetraploidies e.g. in reference to various types of allotetraploidies
or a collection of allotetraploidies.