Скачать или смотреть Codominance Explained — Feather Color & Sickle Cell Anemia | Genetics & Punnett Squares

In this video, Ms. Parrott explores the mode of inheritance called codominance, where heterozygotes express both phenotypes fully. Using feather color in chickens and the human sickle cell anemia trait as examples, we’ll compare codominance to incomplete dominance, break down cellular vs. whole-organism phenotypes, and work through Punnett square examples. You’ll also learn how sickle cell trait provides a heterozygote advantage against malaria.

We’ll Cover:
-What codominance is and how it differs from incomplete dominance
-Feather color example: black × white = black & white feathers
-Sickle cell anemia genetics: HbA (normal) and HbS (sickle) alleles
-Cellular-level vs. body-level phenotypes in heterozygotes
-Punnett square outcomes for different parental genotypes
-Genotype-to-phenotype ratios for sickle cell inheritance
-Heterozygote advantage and malaria resistance

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