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- Wow! What a nice and big barn, big sister. May I ask why we are here
- Can I ask first, on our way here there is an animal with two colors on its skin. Why is it and our skin has only one color?
- Well I want you to see how beautiful this place is, Annika. You will be happy to see different things here.
- Oh! You saw a roan cattle. You see, we have called this called Non Mendelian Inheritances and I will teach you that today!
- That cattle has a codominance inheritance where he inherited both colors of his parents and is also both expressed on his skin.
- The expressed color was a mixed of both arents, creating a third phenotype.
- Here, look! This is an example of incomplete inheritance. The gray sheep is the child of those other two.
- This is so cool! I never new it can happen.
- So it means we are not only talking about two alleles but more than two?
- Sister, you have talk about animals, how about on people? Can you give examples using humans?
- That is actually great. For the inheritance, we have multiple alleles in humans and a great example is our blood. We have type A, B, and O that can be paired up interchangeably.
- Exactly! Wow you got it easily, Annika.
- What are polygenic traits?
- That is incredible! I learned so much today. Thank you, sister!
- And lastly, we have polygenic traits.
- Polygenic traits is clearly multiple genes being involved. There could be the mixed of environemntal factors to the your inherited traits. For example, your height is a polygenic trait. Not only your genes could determine why you got such height, but there could also be a presence of your environment.
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