Is a round yellow pea seed (genotype RrYy) an example of polygenic inheritance? Why or why not

Video transcript

Hi everyone. Let's look at our next question. It says which of the following is not apologetic inheritance. So let's recall from our contact content videos that apologetic inheritance is when you have a phenotype determined by the interaction of multiple genes. So you don't just have a straight um you know white flour versus purple flower uh single gene for flower color but multiple genes going into determining a genotype. So with that in mind let's look through our answer choices, remembering that we're looking for something that is not an example of apologetic inheritance. So choice A. Says light brown eyes. Big B. Little B. Big G little G genotype. Well we can look right away at the list of the genotype to see we have two different genes. Um The gene indicated by B. And the gene indicated by by B. And the gene indicated by g. So that shows us right away. We have more than one gene involved in this single phenotype of eye color. And indeed human eye color is determined by apologetic inheritance. So I'm gonna put a little check red check mark, show yes Paula genic inheritance but that means not our answer choice B. Says medium skin tone parent. And we have big a little a big B. Little B. Big c little C genotype. Again we see three different genes here clearly showing apologetic inheritance and human skin tone. Human skin color is determined by multiple genes interacting together. So that is apologetic inheritance and therefore not our answer choice C. Says dark red wheat kernel. And we see a big a big a big B. Big B. Big C. Big C. Um join again, three different genes involved there. And so that is palla genic inheritance and not our answer. Finally we're on choice D. Purple flowered pea has shown with Big B. Big B. So we have one single gene just the two copies there that the P. Has inherited. So this pea color or pea flower color is determined by one gene and is not apologetic inheritance. And therefore that is our correct answer for which is not an example of apologetic inheritance. See you in the next video.