A __________ is a hybrid, with two nonidentical
alleles (Aa). Fill in the blank(s) with the appropriate word(s).
Answer: heterozygote
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The crescent-shaped structure of PUF proteins reveals two extended surfaces. Based on the location and effects ofmutations, one surface probably binds to regulatory proteins and the other surface probably binds to:
A. ribosomal proteins increasing the association of ribosomes to the 5' end of the ribosome tRNA binding site. B. specific sequences in the 3' UTR of mRNA. C. the nuclearAAUAAA polyadenylation sequence. D. the peptidyl (P) site on the 40Sribosomal subunit.
Which of the following is a potential mechanism through which proteins can acquire novel domain architectures over evolutionary time?
A) protein cleavage B) exon shuffling C) mutation in a pseudogene D) duplication and divergence E) de novo mutation
Describe two classes of proteins known to be involved in the regulation of the cell cycle
What will be an ideal response?
Which of the following numbered events represents the correct sequence of events of prokaryotic translation
initiation? 1) large ribosomal subunit binds to initiation complex 2) initiation tRNA binds small ribosomal subunit 3) initiation complex binds to ribosome recognition sequence on mRNA a. 1 ? 2 ? 3 b. 1 ? 3 ? 2
c. 2 ? 1 ? 3 d. 2 ? 3 ? 1 e. 3 ? 2 ? 1