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如何判断基因的显隐性和基因型
更新时间: 2020-09-24 00:00:00  

基因显隐性判断的口诀是:有中生无是显性,无中生有是隐性。

1、子女正常双亲病,父病女必病,子病母必病,是伴X显性遗传;

2、子女正常双亲病,父病女不病,子病母不病,是常染色体显性遗传;

3、双亲正常子女病,母病子必病,女病父必病,是伴X隐性遗传;

4、双亲正常子女病,母病子不病,女病父不病,是常染色体隐性遗传。

基因型的判断:判断符合的遗传方式,找出基因的显隐性,根据显隐性,可以推出基因型。

关键词: 如何 判断 基因 隐性

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