If the frequency of expression of a recessive
trait in a population is 16 percent, the
frequency of the recessive allele is what
percent?
a. 16
b. 25
c. 40
d. 50
e. 67
C
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In which type of microscopy is a beam of electrons used to scan the specimen, followed by the conversion of the
excited electrons to a three-dimensional image?
a. confocal laser scanning microscopyb. phase-contrast microscopy c. bright field microscopy d. scanning electron microscopy e. fluorescence microscopy
When a hypothesis stands after years of tests and is consistent with all of the data gathered, it is referred to as a(n) ________
a. educated guess b. law of nature c. scientific theory d. sampling error e. prediction
The brain and nervous system of a developing embryo can only be damaged during the very early stages of
development. a. True b. False
Sweat glands produce (lysozyme/dermcidin/acid), which destroys the cell wall of bacteria by cleaving the bonds between the sugar subunits.
Fill in the blank(s) with the appropriate word(s).