TLS Online TPP Program

#Question id: 11228


Though plants, fungi, and prokaryotes all have cell walls, we place them in different taxa. Which of these observations comes closest to explaining the basis for placing these organisms in different taxa, well before relevant data from molecular systematics became available?

#Unit 9. Diversity of Life Forms
  1. Some closely resemble animals, which lack cell walls.
  2. Their cell walls are composed of very different biochemicals.
  3. Some have cell walls only for support.
  4. Some have cell walls only for protection from herbivores
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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: 15407

#Unit 8. Inheritance Biology

The end result of F factor mediated conjugation:

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: 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: 15410

#Unit 8. Inheritance Biology

A pattern of transmission where all offspring have the same phenotype as their mother is consistent with which type of non-Mendelian inheritance?

TLS Online TPP Program

#Question id: 15411

#Unit 8. Inheritance Biology

Both X-linked genes and extranuclear inheritance produce different results in reciprocal crosses. How can you distinguish between them?