Which of the following was the least likely factor causing the Cambrian explosion?

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#Question id: 14707

#Unit 5. Developmental Biology

Which of the following organ belongs to the internal layer of gastrula?

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#Question id: 14906

#Unit 6. System Physiology – Plant

The specific linkages between sugar rings, including the specific carbons that are linked together and the configuration of the linkage, are important for the properties of the polysaccharide;

           

          I) Amylose                          a) β(1,3)-linkages                               

        II) Cellulose                          b) β (1,4)-linkages

         III) Callose                                   c) α(1,4)-linked

                                                             d) α (1,3)-linkages

Which of the following linkage combinations is correct linkages of the polysaccharides?

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#Question id: 23125

#Unit 2. Cellular Organization

Which of the following organism are known for bimodal distribution of the gene

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#Question id: 12081

#Unit 7. System Physiology – Animal

During pregnancy, the uterine smooth muscle is quiescent. During the 9th month of gestation the uterine muscle becomes progressively more excitable. What factors contribute to the increase in excitability?

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#Question id: 9192

#Unit 9. Diversity of Life Forms

The oak tree pathogen Phytophthora ramorum has migrated 650 km in ten years. West Nile virus spread from New York State to 46 others states in five years. The difference in the rate of spread is probably related to