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TLS Online TPP Program

#Question id: 12972

Under  some  circumstances a  population  can  split  into  two  or  more  species  without  the  existence of  geographic barriers. All of the following genetically determined behaviours could provide conditions leading to speciation EXCEPT

#Unit 10. Ecological Principles
  1. Selection of a specific host fruit for completion of the life cycle by a fruit fly
  2. Association of courtship with a particular habitat type in a sparrow
  3. Choice by a butterfly of the time of day to breed
  4. Selection of prey types by a wide-ranging Hawk
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TLS Online TPP Program

#Question id: 131

#Unit 1. Molecules and their Interaction Relevant to Biology

The RS system of nomenclature describes
TLS Online TPP Program

#Question id: 132

#Unit 1. Molecules and their Interaction Relevant to Biology

Proline is distinct among the 20 commonly found amino acids because
TLS Online TPP Program

#Question id: 133

#Unit 1. Molecules and their Interaction Relevant to Biology

Tyrosine and tryptophan are less hydrophobic than phenylalanine because
TLS Online TPP Program

#Question id: 134

#Unit 1. Molecules and their Interaction Relevant to Biology

Ultraviolet (UV) light can be used to estimate protein solution concentrations because
TLS Online TPP Program

#Question id: 135

#Unit 1. Molecules and their Interaction Relevant to Biology

 Concentrations of some proteins cannot be estimated by UV spectrophotometry because they are
TLS Online TPP Program

#Question id: 136

#Unit 1. Molecules and their Interaction Relevant to Biology

The amino acids in polypeptide chains which contain sulfur (S) are