Evolution
by genetic drift is aimless, not adaptive.
by genetic drift is aimless, not adaptive.
正确
举一反三
- Evolution can be defined as _____ change that takes place in a(n) _____. A: any; individual B: a genetic; individual C: any; group of organisms D: a genetic; group of organisms
- Evolution can be defined as _____ change that takes place in a(n) _____. A: any; individual B: a genetic; individual C: any; group of organisms D: a genetic; group of organisms E: All of the answers are correct.
- What is the basis of biological evolution A: have a common ancesto B: struggle for existence C: Overproduction D: genetic variation
- The observation that some genes are mosaics of other genes can be explained by ______. A: evolution B: drift C: exon shuffling D: gene duplication E: pseudogenes
- Which of the following is most effected by genetic drift? A: small populations B: isolated populations C: large populations D: populations with very few natural competitors
内容
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58. <br/>evolution n.______
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The<br/>main factors affecting the selection effect are () A: The<br/>genetic composition of the population B: The<br/>size of the population C: Genetic<br/>characteristics of traits D: Selection<br/>criteria and accuracy of identification
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渐渐入睡 A: drift off B: drift in
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The<br/>theory of evolution originates_______ Darwin. () A: with B: from C: in D: at
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The following types of macroevolution are: A: Specialized evolution B: Simplified evolution C: Evolution at the subspecies level D: Complex evolution