Evolution led to certain fishes, such as lung fishes to adapt to terrestrial mode of life. these fishes were the ancestors of modern amphibians. which evolutionary mechanism is represented by this example?
a. convergent evolution
b. adaptive radiation
c. sympatric evolution

The trp operon in e. coli regulates genes that code for enzymes required for synthesis of the repressible operon. when tryptophan is not available amino acid tryptophan. the trp operon is a in the environment, the trp repressor protein activeinactiveregulated. therefore, rna polymerase can bind to the genes to begin transcription.

Blood has traveled from the heart to the toes. which describes the next step of the circulation process?

All vaccination should(n’t) be mandatory! 1.at least 5 sentences explaining 2.why? 3.in the end summarize the sentence