Several of the different globin genes are expressed in humans, but at different times in development. What mechanism could allow for this?

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#Question id: 10889

#SCPH06 I Botany

Which of the following ecosystem that is lower Productivity/Biomass ratios and energy transfer rates to higher trophic levels are slower 

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#Question id: 5755

#SCPH28 | Zoology

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: 13103

#SCPH01 Biochemistry

With the help of DNA fingerprinting which can be used to determine paternity. There are three babies (Baby A, Baby B and Baby C) in a maternity ward, and three sets of confused and worried parents. (Father and Mother #1 are a couple, as are Father and Mother #2, and Father and Mother #3.) 

You do each PCR reaction and load each one into a separate well of an agarose gel, and then run the gel.

 

 

Why is it that some people show only one band?

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#Question id: 15209

#SCPH01 Biochemistry

Agarose gels are formed by suspending dry agarose in aqueous buffer, in which usually Agarose concentration between

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#Question id: 19204

#SCPH01 Biochemistry

Example of acoustic wave biosensor could be