TLS Online TPP Program

#Question id: 4258


A single base substitution mutation is likely to have a less deleterious effect when the base change exhibits which of the following results?

#Unit 3. Fundamental Processes
  1. a stop codon

  2. a codon that specifies the same amino acid as the original codon

  3. an amino acid substitution that alters the tertiary structure of the protein

  4. an amino acid substitution at the active site of an enzyme

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TLS Online TPP Program

#Question id: 4618

#Unit 11. Evolution and Behavior

Which of the following observations helped Darwin shape his concept of descent with modification?

TLS Online TPP Program

#Question id: 11982

#Unit 10. Ecological Principles

Which of the following is a behavioral pattern that results from a proximate cause?

TLS Online TPP Program

#Question id: 12362

#Unit 10. Ecological Principles

Using the Lincoln index to estimate the population size of wolves, you capture, mark, and release 20 wolves during the precensus period. In the census period 13 marked and 5 unmarked wolves are captured. What is the estimate of the size of the population of wolves that occupy your backyard?

TLS Online TPP Program

#Question id: 10461

#Unit 6. System Physiology – Plant

Model of cry1 interactions with COP1/SPA1 in the regulation of photomorphogenesis, what will happen in the dark as well as in the light in wild type condition of cryptochrome?

a) In the dark, COP1/SPA1 acts to degrade transcription factors such as HY5, which is required for photomorphogenesis

b) In the dark, cry1 is activated by phosphorylation and forms a complex with COP1 and SPA1 via the C-terminal domain, preventing them from degrading protein HY5

c) In the light, COP1/SPA1 acts to degrade transcription factors such as HY5, which is required for photomorphogenesis

d) In the light, cry1 is activated directly by blue light and indirectly by blue light induced phosphorylation and forms a complex with COP1 and SPA1 via the C-terminal domain, preventing them from degrading protein HY5

e) In light as well as in dark both case cryptochrome perfom same function such as forming a complex with COP1/ SPA1 thereby promoting an increase in HY5 protein levels and transcription

Which of the following combinations from the above statements of cryptochrome is incorrect?

TLS Online TPP Program

#Question id: 3216

#Unit 11. Evolution and Behavior

The frequency of galactosemia is approximately 1 in 40,000 live births. The frequency of the carrier state can be calculated as