Polyploid plants found in nature usually have even numbers of chromosomes because organisms having odd numbers

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#Question id: 5755

#XL - S Microbiology

A researcher studying bacterial toxin predicts that a lysine within the toxin is important for binding it’s target cell.  She used site-directed mutagenesis to change a codon for lysine (AAA) to one for asparagine (AAU).  However, the mutant toxin still binds to its target cell just as well as the wild-type toxin bound and appears to have no other changes. This type of mutation is probably

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#Question id: 12567

#XL - R Botany

Which of the following is true about the current research about forest fragmentation?

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#Question id: 19620

#XL - P Chemistry

Only a simple homogeneous reaction requires which of the following methods?

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#Question id: 13032

#XL - S Microbiology

In SDS-PAGE, protein sample is first treated with detergent sodium dodecyl sulfate (SDS), in order to

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#Question id: 185

#XL - T Zoology

Match the amino acids with their correct functional group:

1. Indole	i. Histidine
2. Imidazole	ii. Tryptophan
3. Thiol	iii. Cysteine
4. Pyrrolidine	iv. Proline