Bacterial flagella are composed of three parts: the ________ body, which is embedded in the cell, the hook, and the ________, which is the longest part of the flagellum.
Fill in the blank(s) with the appropriate word(s).
basal; filament
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In a large population on a Pacific island, a few individuals had a mutation that caused them to have different colored eyes. After a hurricane, the population was reduced to only a few individuals, but some of those individuals had the rare eye color mutation. Now, after many generations, almost half of the population on this island has different colored eyes. This is an example of
_____________________. Fill in the blank(s) with correct word
Elongated photosynthetic cells attached to the upper epidermis in leaves are called ________
a. pericycle b. epidermal cells c. palisade mesophyll d. spongy mesophyll
The concentration of the pesticide DDT is likely highest in which organism?
A. a seagull B. plankton C. a minnow D. a mosquito larva
The physical traits of an organism are called its _________.
A. allele B. genotype C. gene D. phenotype