A technique used to identify species by matching up sequence differences in a standard region of the genome is called
A. mutation counting.
B. genome sequencing.
C. DNA barcoding.
D. nucleotide matching.
E. PCR
Answer: C
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If we think of the DNA double helix as a twisted ladder, what makes up the rungs or steps of the ladder?
A. phosphate groups only B. alternating phosphate groups and sugars C. sugars only D. purines and pyrimidines E. phosphate groups and bases
IgE is found in extremely small amounts in serum
Indicate whether the statement is true or false.
When a cell expands in diameter, volume increases by the ____ of the diameter, and surface area increases by the____
of the diameter.
a. square; square b. square; cube c. cube; square d. cube; cube e. square root; square root
__ is/are generally accepted as a secondary sex characteristic
Fill in the blank(s) with the appropriate word(s).