When creating a gene library, how is recombinant DNA introduced into bacterial cells?
A) viral vectors
B) gel electrophoresis
C) plasmids
D) DNA polymerase
E) restriction enzymes
D) Plasmids
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A mammalian female’s
a. cells usually have multiple Barr bodies. b. body is a mosaic for the X-linked traits she inherits. c. Barr bodies are active in some cells. d. Barr bodies are produced after puberty. e. X-linked recessive genes are always expressed because of the deactivation of an X chromosome in each cell.
While many body cells only replicate 40 to 60 times, cells that produce certain white blood cells may replicate many more times. It is, therefore, crucial that proofreading and repair occur so that the transfer of biological information is accurate. On the other hand, absolute accuracy in replication of biological information would cancel out mutations that are the raw material of evolution. Why is accuracy in transcription and translation less critical than accuracy in gene replication?
What will be an ideal response?
Bile is an important enzyme that digests lipids
Indicate whether the statement is true or false
Cytokines can:
a) Stimulate inflammation b) Stimulate antibody production c) Be secreted by one cell to affect another d) All of the above are correct