heterozygote和hemizygote有什么区别

echowdk

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遗传学得一直不好 。最近做小鼠实验，看小鼠背景的时候，忽然注意到这个差别，搞不明白。这个heterzygote和hemizygote到底有什么区别啊？求高人指点……

naturalkillerce

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; `2 v6 j/ h0 J: cZygosity refers to the similarity of alleles for a trait in an organism. If both alleles are the same, the organism is homozygous for the trait. If both alleles are different, the organism is heterozygous for that trait. If one allele is missing, it is hemizygous, and if both alleles are missing, it is nullizygous.
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The words homozygous, heterozygous, and hemizygous are used to describe the genotype of a diploid organism at a single locus on the DNA. Homozygous describes a genotype consisting of two identical alleles at a given locus, heterozygous describes a genotype consisting of two different alleles at a locus, hemizygous describes a genotype consisting of only a single copy of a particular gene in an otherwise diploid organism, and nullizygous refers to an otherwise diploid organism in which both copies of the gene are missing.

echowdk

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7 `( H% L2 `- t( u哇~~看完之后恍然大悟，原来hemi是纯指一个拷贝……
1 l1 {) ?* r" R7 Y' d' \谢谢

naturalkillerce

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3 j: l! U- m% \& `7 o  l5 wCorrect。