user389: I'm looking at various tags right now and I think that some tags, for instance "gene-expression" and "protein-expression", should be merged. How would I go about doing this?

user6: If the tags are only on a handful of questions, just change the tags on those by hand. If it is on 10+ questions you can ask a moderator, we can merge tags without having to edit all the questions by hand.
In this case though gene-expression and protein-expression are not identical, they are used differently. They're not necessarily used clearly, but they shouldn't just be merged.
If we have some tags that are not used in a clear manner and you're unsure about how to proceed, you can always start a discussion about the tags here on meta or in chat.

389: <p>I'm looking at various tags right now and I think that some tags, for instance "gene-expression" and "protein-expression", should be merged. How would I go about doing this?</p>
 6: <p>If the tags are only on a handful of questions, just change the tags on those by hand. If it is on 10+ questions you can ask a moderator, we can merge tags without having to edit all the questions by hand.</p>

<p>In this case though <a href="https://biology.stackexchange.com/questions/tagged/gene-expression" class="post-tag" title="show questions tagged &#39;gene-expression&#39;" rel="tag">gene-expression</a> and <a href="https://biology.stackexchange.com/questions/tagged/protein-expression" class="post-tag" title="show questions tagged &#39;protein-expression&#39;" rel="tag">protein-expression</a> are not identical, they are used differently. They're not necessarily used clearly, but they shouldn't just be merged.</p>

<p>If we have some tags that are not used in a clear manner and you're unsure about how to proceed, you can always start a discussion about the tags here on meta or in chat.</p>
