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TLS Online TPP Program

#Question id: 6978

Removal of the apical ridge leads to

#Unit 5. Developmental Biology
  1. regeneration of the entire limb bud from underlying mesoderm
  2. formation of structures proximal to the apical ridge, but no formation of new distal structures
  3. regeneration of a new apical ridge from adjacent epidermal tissue
  4. continued development in the progress zone, once the apical ridge has induced progress zone formation
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TLS Online TPP Program

#Question id: 16131

#Unit 13. Methods in Biology

You are studying regulation of the yeast enzyme glutamine synthetase (GS), which is encoded by the GLN1 gene. You have isolated two mutants, designated gln2– and gln3–, that give decreased GS activity. Mating of either gln2– or gln3– haploids to wild type produces heterozygous diploids that show normal amounts of GS expression. When you cross either a gln2– or gln3– haploid to a gln1– strain the resulting diploids show normal expression of GS.              
 How many units of ß-galactiosidase would you expect to be expressed from deletion 4 in a gln2– mutant?
TLS Online TPP Program

#Question id: 27023

#Unit 10. Ecological Principles

when one species uses a second species for housing, is an characteristics of
TLS Online TPP Program

#Question id: 11645

#Unit 7. System Physiology – Animal

Which of the following is inconsistent with the diagnosis of Graves’ disease?
TLS Online TPP Program

#Question id: 23592

#Unit 13. Methods in Biology

Which of the following list gives the amount of foreign DNA that can be inserted into vectors is not true?
TLS Online TPP Program

#Question id: 23873

#Unit 13. Methods in Biology

Genetically engineered plants