… Because there is no dominance or inferiority between I A and I B , the heterozygote I A I B has the characteristics of both types A and B, resulting in type AB. When there is no dominance or inferiority in the function of the alleles, this is called codominant. On the other hand, I A and I B are dominant over i , and conversely, i is recessive over I A and I B , so the phenotypes of the two heterozygotes I A i and I B i are types A and B, respectively. … *Some of the terminology explanations that mention "codominance" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…IAとIBの間には優劣がないため,ヘテロ接合体IAIBの血液型はA型とB型の両方の特徴をもち,AB型となる。このように対立遺伝子の働きに優劣がない場合を共優性codominantという。一方,IAやIBはiに対し優性dominantであり,逆にiはIAやIBに対し劣性recessiveであるので,二つのヘテロ接合体IAiとIBiの表現型はそれぞれA型とB型になる。… ※「共優性」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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