A __________ is a hybrid, with two nonidentical

alleles (Aa). Fill in the blank(s) with the appropriate word(s).


Answer: heterozygote

Biology & Microbiology

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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.

Biology & Microbiology

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

Biology & Microbiology

Describe two classes of proteins known to be involved in the regulation of the cell cycle

What will be an ideal response?

Biology & Microbiology

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

Biology & Microbiology