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EVOLUTION MAKING SENSE OF LIFE REAL EXAM/ EVOLUTION MAKING SENSE OF LIFE REAL EXAM QUESTIONS AND VERIFIED ANSWERS ;LATEST UPDATE !!GRADED A+
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Evolution of the eye - ANSWER-1. Early chordates had light-sensitive eye-spots expressing photoreceptor genes 2. Light-sensitive regions bulge outward to the sides of the head 3. Patch folds inward into a cup, beneath unpigmented skin (lens placode) 4. Surface becomes transparent, and lens evolves ability to focus an image 5.Eyes become spherical and evolve greater acuity Constraints on adaptation - ANSWER-Laws of physics Existing genetic toolkit Pleiotropy (especially antagonistic pleiotropy) Single gene affects expression of many traits Genetic correlations mutation load - ANSWER-The population average decline in fitness that is due to the presence of detrimental alleles that have not yet been 'purged' by selection
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EVOLUTION MAKING SENSE OF LIFE
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EVOLUTION MAKING SENSE OF LIFE
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- Uploaded on
- March 3, 2024
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evolution making sense of life real
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