Anybody take Agriculture in middle school?

Ok, so I already posted a reply to this question in the Solo Leveling comments where you posted it as well, but since *that's* not exactly the most ideal place for it, I'm reposting here:

For the sake of a fellow worshipper of our common God, His Highness the Shadow Monarch... here's a little bit of input from me:

1.) Google is your best friend: you can start by looking up sites on "animal genetics" in general. Look at some of the first ones that come up, and you'll get a rough idea of the different things that fall under the category. Once you have that, you can go from there and look up info for the various concrete things that fall under the category.
Here's one example site: http://www.fao.org/animal-genetics/background/why-is-ag-important/en/
This site sums animal genetics up as "a broad field, ranging from characterization to conservation to genetic improvement, and involves actions at local, national, regional and global scales."
Basically, they go on to elaborate about three subcategories. Ultimately, it's about analyzing genetic material, conserving it, and "improving" it.
The last one - deliberate modification, or "improving" as they optimistically call it, would obviously be the most problematic one, if you're looking for downsides. Mainly because some selected group of people deciding on what's considered a "good" trait and what should be eliminated may not actually be in a position to make a universally correct judgement on this. Something that may increase production (of milk, meat, etc.) short-term, for instance, may also lead to increase in health problems for the animals in question long-term (and this is a problem from both an ethical standpoint - because those animals will needlessly suffer - and from a practical standpoint, because poor health of the animals may actually cause more revenue losses than what the increased production can even make up for eventually - and this may not become apparent right away, but only when it's already too late).
Also, what always needs to be considered, whenever it comes to us humans analyzing and in any way modifying genetics, is that humans messing with genetics still ultimately means us trying to change a code we don't *fully* understand yet. We understand parts of it, but not all. So we may be looking to do one thing, but end up unknowingly doing five other things along with it that we did *not* want, and - if we're unlucky - possibly only find out about this many generations later when there are irreversible or hard to reverse consequences. So, by modifications that may seem like a good idea at first, we may unknowingly be introducing errors into the code and destabilizing the entire system. (These are just my personal thoughts in a nutshell, you can try googling something along the lines of "unknown consequences of animal gene editing" for more elaborate discussions of what actual specialized scientists have to say about this.)

Another very interesting subcategory would be preservation by cryoconservation. Now this is, in my opinion, an extremely interesting field with amazing possibilities. (Though, of course, again - there are always risks to be considered when messing with genetics and we should always be careful.)
This way, you can preserve the genetic material of ideal, healthy animals that might otherwise become lost over time. The most frequent use would obviously be for livestock.
Another quite interesting subcategory would be regarding pets. This is not very common or particularly well known just yet, but the preservation of the genetic material of people's particularly beloved pets for possible cloning at a later time is already fairly easy, and is being offered as a service by several specialized companies.
The cloning process itself is also already possible - though still not perfected and therefore pretty problematic from an ethical as well as financial viewpoint. For families who were very attached to a particular deceased pet and who own and are willing to invest the necessary amount of money - it's basically possible to have their favorite pet be "reborn" as a healthy baby animal yet again already. Though - like I mentioned - there are still currently ethical issues because the process is still not ideal at this point. But to, say, some little child who has had their heart broken by their dog who was like their best friend and whom they've taken care of since it was a small puppy being suddenly run over by a car and who is having trouble getting over the loss - having said puppy suddenly come back to them may actually be healing and feel like something out of a fairytale that makes them truly happy.
A viable, financially realistic and ethically less problematic alternative for pet owners may be simply doing cryopreservation of their deceased pet's genetic material for some later time. This way, they still have the chance to make up their mind about what they'd like to do later - and keep the option of choosing to do the cloning process at some other time in the future - when the process may have sufficiently imporved to be less ethically problematic as well as more affordable financially. There's steady, often quite impressive progress being made in these areas of research every year, so chances are this may soon become far less rare and uncommon.

So yeah. That's some of my thoughts and personal knowledge on this topic. You can pick out whatever tidbit of information sounds interesting or useful to you and do further research on it by simply googling it. Or not.
Either way, there's literally a ton of various materials about these things all over the internet wherever you look, so I don't think you should have much of a problem with finding enough stuff to write about at all. Don't be shy about adding your *actual* own, personal opinions on the things you read about as well, along with some reasoning about why you think about it the way you do, etc., etc.

Hope this helped a little ╮(￣▽￣)╭