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\nCodominance | Genetics | Biology | FuseSchool\n

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\nCodominance | Genetics | Biology | FuseSchool In this video we are now going to look at codominance. You need to understand the difference between genotype and phenotype. The genotype is the set of genes. The phenotype are the physical...\nCodominance | Genetics | Biology | FuseSchool In this video we are now going to look at codominance. You need to understand the difference between genotype and phenotype. The genotype is the set of genes. The phenotype are the physical characteristics that are coded for by the genotype. A monohybrid cross is the study of the inheritance of one characteristic - such as the pea-pod colour. They will either be green or yellow. Not a mixture of the two. Only one of the alleles is expressed, and the yellow allele is dominant so in the Yy genotype the yellow pod colour wins. In codominance, the alleles are both expressed in the same phenotype - so you can end up with a mixture. Neither allele is dominant. This happens with chickens. Neither the black nor the white allele is dominant, so the BW genotype gives a speckled phenotype. Codominance is seen throughout the animal and plant kingdoms. It is also seen in our blood groups. There are 4 blood groups; A, B, AB and O. There are 3 different possible alleles for blood group: IA IB IO. But we each only have two of them - one from our mother and one from our father. IA and IB are codominant. Io is recessive to both IA and IB. IA and IB are codominant. Io is recessive to both IA and IB These genotypes give these phenotypes. If you inherit IA from your mother and IB from your father, you will be AB blood group. To be blood group O, both of your parents must have at least one Io allele. Your parents could be either of these 3 genotypes: IAIO, IBIO or IOIO. SUBSCRIBE to the FuseSchool YouTube channel for many more educational videos. Our teachers and animators come together to make fun & easy-to-understand videos in Chemistry, Biology, Physics, Maths & ICT. VISIT us at www.fuseschool.org, where all of our videos are carefully organised into topics and specific orders, and to see what else we have on offer. Comment, like and share with other learners. You can both ask and answer questions, and teachers will get back to you. These videos can be used in a flipped classroom model or as a revision aid. Find all of our Chemistry videos here Find all of our Biology videos here Find all of our Physics videos here Find all of our Maths videos here Instagram Facebook Twitter Access a deeper Learning Experience in the FuseSchool platform and app: www.fuseschool.org Follow us Befriend us This is an Open Educational Resource. If you would like to use the video, please contact us: info@fuseschool.org\n
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Grade
12th - Higher Ed
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Instructional Videos
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Date
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2017
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