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单词 semi-lethal
释义

Definition of semi-lethal in English:

semi-lethal

adjective
Genetics
  • Relating to or denoting an allele or chromosomal abnormality which impairs the viability of most of the individuals homozygous for it.

    Example sentencesExamples
    • Pokey (pok), a sex-linked recessive semi-lethal gene in Tribolium castaneum has been described.
    • Some of the genes that gives the mouse its common colours or markings also makes the mouse sick, or unfit to live. These genes are called semi-lethal or lethal.
    • A chief difficulty in arguing for macroevolution by mutations is the fact that most expressed mutations are either lethal or semi-lethal.
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更新时间:2025/7/3 14:59:40