Of the processes involved in the long-term carbon cycle, which introduces CO2 back into the atmosphere?
A. chemical weathering
B. carbonate precipitation
C. volcanism
D. respiration
E. photosynthesis
C
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The X chromosome ____
a. carries the SRY gene b. is present in two copies in males c. pairs with an autosome during meiosis d. carries many genes that are not involved in sex determination e. is not present in males
A plant secretes ____ when it needs to respond
defensively to a pathogen. a. salicylic acid b. systemin c. brassinosteroids d. mineralocorticoids e. nitric oxide
Explain two important sources of genetic variation in meiosis. Evolutionarily speaking, why do you think is it important that meiosis involves recombination of the genes?
What will be an ideal response?
The transcribed, but not translated, sequence that is immediately upstream of the region that encodes the functional product is called the ________ region.
A. trailer B. leader C. promoter D. coding