Really short answer: it's complicated.Hm so one of my Rhode Island Red hen and my little Cochin had a roo that’s red with a sprig of black, he looks like his mama. So what is passed from my little Cochin rooster? I mean what do the males pass along? Or is it that specific?
Little bit longer answer: given what you've seen so far with that rooster, he probably has a bunch of recessive genes, so his chicks will often look like their mothers. Some other roosters have a bunch of dominant genes, so their chicks will often look like themself (common example: solid black roosters). Some roosters have a mix of dominant and recessive genes, so their chicks will match them in some traits and not in others. The same goes for hens, so some hens will usually produce chicks that look like themselves, some will usually produce chicks that look like the fathers, and some produce chicks that look like mixes.
If you want a more thorough answer, I recommend the genetics section of the forum. Similar questions have been asked before. Examples:
https://www.backyardchickens.com/th...aits-or-roosters-or-are-both-the-same.201268/
https://www.backyardchickens.com/th...s-and-what-wil-the-hen-pass-to-chicks.681856/
https://www.backyardchickens.com/th...s-and-what-wil-the-hen-pass-to-chicks.681856/
There are probably quite a few more, but if you don't see any that put the answer in a form you can easily understand, try posting a new thread with your question. Questions posted in different years will tend to get answers from different people, which means it gets explained in slightly different ways.