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TLS Online TPP Program

#Question id: 3288

Migration causes changes in the allelic frequency of a population by introducing alleles from other populations. The magnitude of change due to migration depends on

#SCPH06 I Botany

  1. Both the extent of migration and the difference in allelic frequencies between the source and the recipient populations.

  2. The extent of migration

  3. The difference in allelic frequencies between the source and the recipient populations.

  4. Depend on sex ratio of source population

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TLS Online TPP Program

#Question id: 12677

#SCPH06 I Botany

Aquatic ecosystems that are most readily damaged by acid are those that lack an important buffer that dissolves into the runoff after a precipitation event. What is this buffer?
TLS Online TPP Program

#Question id: 2974

#I Life Science/ Life Sciences Group – I-V

Following statements are regarding to control of the G1–S phase transition in budding yeast.

A. G1 cyclin-CDK complexes stimulate the formation of G1/S phase cyclin-CDKs, which then initiate bud formation, centrosome duplication, and DNA replication. In yeast, the G1 cyclin gene is called CLN3.

B. Once sufficient Cln3 is synthesized from its mRNA, Cln3-CDK complexes phosphorylate and activate the transcriptional repressor Whi5.

C. Phosphorylation of Whi5 promotes its export out of the nucleus, allowing the transcription factor complex SBF to induce transcription of the G1/S phase cyclin genes CLN1 and CLN2 as well as other genes important for DNA replication.

D. Once produced, Cln1/2-CDKs contribute to further Whi5 phosphorylation. This positive feedback loop ensures the rapid accumulation of G1/S phase cyclin-CDKs.

Which of the following statements are correct?
TLS Online TPP Program

#Question id: 17080

#SCPH01 Biochemistry

Hypoxanthine and thymidine are required for running which pathway
TLS Online TPP Program

#Question id: 11019

#I Life Science/ Life Sciences Group – I-V

An 80-year-old man had an EKG taken at his local doctor’s office, and the diagnosis was atrial fibrillation. Which of the following statements are likely conditions in someone with atrial fibrillation?
TLS Online TPP Program

#Question id: 18838

#I Life Science/ Life Sciences Group – I-V

Which one of the following RNA secondary structure prediction methods is based on the principle of locating lowest energy minimum in the conformation space of a RNA structure?