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TLS Online TPP Program

#Question id: 12343

Hybrids between some related species of plants are sterile because the parent plants had different chromosome numbers. Occasionally the chromosome number of such a hybrid  plant doubles spontaneously. Which of the following best describes the descendants of those plants with the double chromosome number?

#Unit 10. Ecological Principles
  1. The plant with the double chromosome number would be genetically defective and have no descendants. 
  2. The descendants would be at a selective advantage because of the increased ability to introgress.
  3. The descendants would be reproductively successful because they could backcross with the parental species.
  4. The descendants would regain the ability to reproduce sexually because chromosomes could pair normally.
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TLS Online TPP Program

#Question id: 3679

#Unit 3. Fundamental Processes

A mutation in an E. coli cell becomes active half-way through a round of replication. The cell completes the round of replication normally but then cannot start a second round. Which protein could be mutated?
TLS Online TPP Program

#Question id: 2476

#Unit 2. Cellular Organization

The alpha and beta tubulin proteins can bind:
TLS Online TPP Program

#Question id: 26800

#Unit 8. Inheritance Biology

Effects of double crossover in two-strand is___
TLS Online TPP Program

#Question id: 3916

#Unit 3. Fundamental Processes

Transcription termination
TLS Online TPP Program

#Question id: 4407

#Unit 3. Fundamental Processes

The general transcriptional factors are used by all sets of RNA Polymerase. Which of the following GTF is/are commonly used by all RNA Polymerases?

A. TBP

B. TFIID

C. TFIIIC

D.TFIIE

E. TFIIH