The structural genes in the lac operon are transcribed into a single polycistronic mRNA molecule
Indicate whether the statement is true or false
TRUE
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In which of the following do the lightdependent
reactions of photosynthesis take place?
a. thylakoid membranes b. stroma c. the outermost membrane d. between the outermost and innermost membranes e. a combination of more than one of these
The bones in the forelimbs of a mammal ____
a. can often be traced to a common ancestor b. offer no evidence to support the theory of evolution c. perform the same function no matter which species they are in d. may exhibit either analogy or homology but not both when compared to the forelimb of another animal e. show convergence with some invertebrate structures
In the experiment with Peacock butterflies, the
working hypothesis is that a. mimicry confuses both predator and prey. b. mimicry conveys a selective advantage to the prey. c. birds are capable of learning. d. birds are agents of evolution. e. unpalatable species display distinctive wings.
Tay-Sachs disease is a genetic disorder in which fat deposits build up in nerve cells of the brain, leading to a slow loss of function. Because this disease usually strikes children under 1 year of age, the symptoms are not immediately apparent
Think about the symptoms that this condition would cause. List some that you think are possible. What would be the inevitable end result as the disease progresses?