Avery, MacLeod, and McCarty's experiments revealed that the transforming principle had all of the following properties except
A. its activity was destroyed by treatment with proteases.
B. its activity was unaffected by RNA-digesting enzymes.
C. its activity was unaffected by lipid extraction.
D. its activity was destroyed by treatment with DNA endonucleases.
A. its activity was destroyed by treatment with proteases.
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Choose the correct sequence of events involving allopolyploidy that gave rise to modern tobacco.
A. hybridization, chromosome doubling, duplicate gene loss B. hybridization, duplicate gene loss, chromosome doubling C. chromosome doubling, hybridization, duplicate gene loss D. duplicate gene loss, hybridization, chromosome doubling
A heterogeneous environment is typically a ______ factor against the fitness of the population
A. Negative B. Positive C. Neutral
Methanogens may contribute to the greenhouse effect and global warming due to methane production.
Answer the following statement true (T) or false (F)
A classification method that uses shared traits of organisms such as the presence or absence of jaws, bones, lungs and limbs, as shown in the figure below, to predict phylogeny is called
a. paleontolog b. archeology c. cladistics d. Benomics e. convergent evolution