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TLS Online TPP Program

#Question id: 14997

You capture several interesting insects from a population in your yard. By inbreeding, you develop true breeding strains that differ only in the shape of their wings - one strain has round wings while the other strain has oval wings. How might you demonstrate that Mendel's principles apply to your insects?

#Unit 8. Inheritance Biology
  1. Set up a monohybrid cross and determine if your f2 results are predicted by 3:1 ratio based on the law of segregation
  2. Set up a dihybrid cross and determine if your F2 results are predicted by a 9:3:3:1 ratio based on the law of independent assortment.
  3. Set a test cross to demonstrate that your traits breed true.
  4. Set up a two point test cross to demonstrate that your genes are linked.
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TLS Online TPP Program

#Question id: 4341

#Unit 3. Fundamental Processes

Suppose an experimenter becomes proficient with a technique that allows her to move DNA sequences within a prokaryotic genome. If a researcher moves the promoter for the lac operon to the region between the beta galactosidase (lacZ) gene and the permease (lacY) gene, which of the following results would be most likely?
TLS Online TPP Program

#Question id: 2995

#Unit 2. Cellular Organization

 Which of the following incorrect pair?
TLS Online TPP Program

#Question id: 26541

#Unit 3. Fundamental Processes

Which of the following activities are found in TFIIH  
a. ATPase
b. helicases
c. kinase
d. Ubiquitinylate
TLS Online TPP Program

#Question id: 12795

#Unit 10. Ecological Principles

Two plant species live in the same biome but on different continents. Although the two species are not at all closely related, they may appear quite similar as a result of
TLS Online TPP Program

#Question id: 15524

#Unit 4. Cell Communication and Cell Signaling

The bulk of DP thymocyte death (~95%) occurs among thymocytes that fail positive selection because