Although mutations have been observed in many different genes, they have not been isolated in histones. Why does this seem reasonable? If one wanted to produce antibodies to histones, would it be an easy task? Explain your answer
What will be an ideal response?
Histones represent one of the most conserved molecules in nature because they are involved in a fundamental and important function relating to chromosome structure. Mutations are probably lethal. Because all antibody-producing organisms have essentially the same histones, it would be difficult to find an organism that produces histone antibodies, for to do so would be self-destructive.
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Answer the following statements true (T) or false (F)
1. Restriction enzyme digestion of DNA is NOT required to perform a Southern blotting experiment. 2. The main goal of polymerase chain reaction (PCR) is to generate many copies of DNA. 3. DNA microarrays (gene chips) are only capable of monitoring the expression of one gene at a time. 4. 2-D gel electrophoresis separates proteins of interest based solely on molecular weight.
Infections caused by fungi are called mycoses.
Answer the following statement true (T) or false (F)
The flow of which of the following ions makes the largest contribution to the resting potential?
a. K+ b. Na+ c. H+ d. Ca2+
________ are preparations of live microorganisms fed to animals to improve intestinal biota.
A) Prebiotics B) Probiotics C) Lantibiotics D) Macrobiotics