The only part of an amino acid that differs from other amino acids is its R group.
Answer the following statement true (T) or false (F)
True
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Which early scientist proposed that cells arise only from preexisting cells by a process of division?
a. Anton van Leeuwenhoek b. Robert Brown c. Matthias Schleiden d. Theodor Schwann e. Rudolf Virchow
The study of patterns in the geographical distribution of species is called ________
a. evolutionary biology b. biodiversity c. biogeography d. population genetics
Which is an example of subfunctionalization of a gene duplicate?
A. Gene duplication leads to new combinations of existing exons, as in the jingwei locus B. A duplicate of a metabolic gene evolves to work as an antifreeze protein in an Arctic fish. C. Retrotransposition of the Alu elements into many positions in the genome D. Duplication of hemoglobin genes allows specialized versions to be expressed in fetus vs. adult. E. A gene is duplicated to a new position in the genome, but its regulatory elements are missing, so it is never expressed.
Which E-value represents the highest probability of a BLAST result not being chance?
A) 1 B) 0.01 C) 1 × 10-3 D) 0.1 E) 1 × 10-4