One of the first uses of DNA fingerprinting was in ________ medicine.
Fill in the blank(s) with the appropriate word(s).
forensic
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One plasma cell will secrete antibodies of various classes, but the antibodies will all have the same specificity.
Answer the following statement true (T) or false (F)
Although the exact microbial composition varied among individuals, the HMP found that the collection of _______ made by the normal biota was very stable
Fill in the blank(s) with the appropriate word(s).
The mismatch repair system recognizes mismatched base pairs, removes a portion of the DNA strand containing the error, and then resynthesizes the missing DNA using the correct sequence as a template. But what if the mismatch repair system instead removed a piece of the DNA strand that contained the correct sequence? What would replication of this improperly repaired sequence produce?
A. two DNA molecules bearing the same mutation B. two DNA molecules with different mutations C. two DNA molecules that are missing one nucleotide pair D. two DNA molecules with a gap where the correct sequence was excised E. one DNA molecule with a mutation and one DNA molecule with a mismatch
Chum salmon (Oncorhynchus keta) are born in freshwater environments and then migrate to the sea. Near the end of their lives, they return to the freshwater stream where they were born to spawn
In freshwater, water constantly diffuses into the body and ions are lost from the body. In salt water, body water diffuses out of the body and excess ions are gained from the water. A salmon's gills have special cells to pump salt in or out of the body to maintain homeostasis. In response to the salmon's moves between freshwater and salt water, some cells in the gills are produced and others are destroyed. These changes made in the cells of the gills during the lifetime of an individual salmon are an example of which of the following? A) evolution B) trade-off C) acclimatization D) adaptation