OBJECTIVE LIFE SCIENCE
EVOLUTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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It can be determined how efficient hemoglobin is for different species
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It can provide evidence about the relatedness of the different species:if they are more similar they have a more recent common ancestor.
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It cannot determine relatedness between different species, only individuals of the same species
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It can show which species evolved first
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Detailed explanation-1: -By looking for amino acid sequence differences between species, scientists can infer how closely or distantly related two species are in evolutionary time.
Detailed explanation-2: -Biologists have perfected techniques for determining the sequence of amino acids in proteins. By comparing the amino acid sequences in homologous proteins of similar organisms and of diverse organisms, evolutionary relationships that might otherwise go undetected can be determined.
Detailed explanation-3: -By comparing the order of amino acids that make up the protein Cytochrome C and noting the differences in the arrangement, scientists can infer relationships among species. In general, the more amino acids two species share, the more closely related they are in evolutionary time.
Detailed explanation-4: -Biologists believe that the greater the similarity between the amino acid sequences of two organisms, the closer their relationship. Conversely, the greater the differences, the more distant the relationship.
Detailed explanation-5: -When comparing certain amino acid sequences in the protein hemoglobin of humans to those of other animals, scientists found that baboons had seven different amino acids (than the human protein), dogs had ten different amino acids, gorillas had one different amino acid, and lemurs had eight different amino acids.