• It is likely that the "s" strain is the ancestral species because it is found all over sub-Saharan Africa, whereas the "M" strain is concentrated on central and west Africa.

    S可能原始种群因为发现存在于撒哈拉沙漠以南非洲各地

    youdao

  • It is likely that the "s" strain is the ancestral species because it is found all over sub-Saharan Africa, whereas the "M" strain is concentrated on central and west Africa.

    S可能原始种群因为发现存在于撒哈拉沙漠以南非洲各地

    youdao

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