他们发现耐药结核杆菌与其他细菌竞争的能力，取决于它们所获得的耐药突变，以及它们的遗传品系。

They found that the ability of the resistant bacteria to compete depended on the mutations they had acquired to become resistant, as well as their genetic strain.

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令人感兴趣的是，研究者发现小鼠遗传品系之间的表达的变异更可能在新近进化的大脑区域中被发现。

Interestingly, the researchers found that the expression variations between genetic strains were more likely to be found in areas of the brain that evolved more recently.

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优先遗传父母一方的某些品种或品系具有的将自身特点传给后代的能力，并明显地排斥了父母另一方，另一种品种或品系的作用。

The ability of one parent, variety, or strain to transmit individual traits to an offspring, apparently to the exclusion of the other parent, variety, or strain.

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