TLS Online TPP Program

#Question id: 18794


Which of the following compound is rapidly phosphorylated and incorporated in its place into newly synthesized DNA and is used to detect replicating cells.

#Unit 13. Methods in Biology
  1. The MTT Assay
  2. carbon method 
  3. EDTA
  4. bromodeoxyuridine (BrdU)
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TLS Online TPP Program

#Question id: 11765

#Unit 10. Ecological Principles

The population density of a particular insect species was determined to be 15,000 adults per hectare in the summer of 1996, 21,000 adults per hectare in the summer of 1997, and 29,400 adults per hectare in the summer of 1998. Based on these population estimates, what is your estimate of λ, the annual rate of geometric growth?

TLS Online TPP Program

#Question id: 11766

#Unit 10. Ecological Principles

The population density of a particular insect species was determined to be 15,000 adults per hectare in the summer of 1996, 21,000 adults per hectare in the summer of 1997, and 29,400 adults per hectare in the summer of 1998.

What would you expect the insect population to be in the summer of 2000, assuming no change in λ?

TLS Online TPP Program

#Question id: 11767

#Unit 10. Ecological Principles

If a population has a stable age distribution, which of the following statements is true?

TLS Online TPP Program

#Question id: 11768

#Unit 10. Ecological Principles

As documented by peter and rosemary grant, the population of the medium ground finch on the tiny island of Daphne major in the Galápagos archipelago responded how to changes in food resources associated with climate changes:

TLS Online TPP Program

#Question id: 11769

#Unit 10. Ecological Principles

Which term refers to the outward expression of an individual’s unique genetic constitution in their structure and function?

TLS Online TPP Program

#Question id: 11770

#Unit 10. Ecological Principles

Natural selection in an animal population results in narrowing of the range of phenotypic variation but no change in the average phenotype. What kind of selection is this population experiencing?