TLS Online TPP Program

#Question id: 4969


The snowball Earth hypothesis provides a possible explanation for the

#Unit 11. Evolution and Behavior
  1. diversification of animals during the late Proterozoic.

  2. oxygenation of Earthʹs seas and atmosphere.

  3. colonization of land by plants and fungi.

  4. origin of O2-releasing photosynthesis.

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TLS Online TPP Program

#Question id: 15409

#Unit 8. Inheritance Biology

 A heterozygous trihybrid corn plant is testcrossed and the following progeny are produced (all traits are recessive to their wildtype alternative);
          booster                              6
          booster, silkless                  137       
          booster, liguleless, silkless      291
          liguleless                          142
          liguleless, silkless                  3
          silkless                            30
          booster, liguleless                  34
          wildtype                            339
What is the order of the loci on the chromosome? 

TLS Online TPP Program

#Question id: 15408

#Unit 8. Inheritance Biology

Which of the following is not a protein or group of proteins required for conjugation to occur?

TLS Online TPP Program

#Question id: 15407

#Unit 8. Inheritance Biology

The end result of F factor mediated conjugation:

TLS Online TPP Program

#Question id: 15406

#Unit 8. Inheritance Biology

Which method of gene transfer involves direct contact between the bacteria?

TLS Online TPP Program

#Question id: 15388

#Unit 8. Inheritance Biology

What do transduction, transformation, and conjugation have in common?

TLS Online TPP Program

#Question id: 15387

#Unit 8. Inheritance Biology

How might the results of Bernard Davis's U tube experiment have been different if each strain were only mutant for a single gene?