________ proteins stabilize partially folded parts of proteins in their correct form.
A) Chaperone
B) Signal sequences
C) Proteasomes
D) Ubiquitin
A) Chaperone
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True-breeding tall snapdragons with red flowers were crossed with short snapdragons with white flowers. The resulting F1 progeny were all of medium height and had pink flowers
When the F1 progeny are crossed with each other, what proportion of the F2 progeny would be of medium height and have pink flowers? A. 1/4 B. 1/2 C. 1/8 D. 1/16 E. 3/4
Which of the following does not reflect the action of an effector molecule on the transcription of a gene?
A. An effector binds to a repressor to decrease the level of transcription. B. An effector binds to a repressor to increase the level of transcription. C. An effector binds to an activator to increase the level of transcription. D. An effector binds to a polymerase to increase the level of transcription.
Chemical mutagens that mimic the naturally occurring bases are called
A. nitrogen mustards. B. alkylating agents. C. base analogs. D. nitrous oxide.
You are a genetic counselor working with a phenotypically normal young couple who have been referred because the wife has a family history of a mitochondrial disorder that results in considerable dysfunction
What is the most important consideration you can suggest? A) to refrain from having children that are hers biologically B) that she be tested to find out what percentage of her mitochondria bear the mutation C) that both husband and wife have mtDNA testing for the sequence in question D) that her affected mother's DNA be tested E) that they consider having only sons