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TLS Online TPP Program

#Question id: 12295

Which of these equations would give the growth rate of a population?

#Unit 10. Ecological Principles
  1. Total number of individuals / (deaths - births)
  2. Total number of individuals / (births - deaths)
  3. (births – deaths) / total number of individuals
  4. (deaths – births) / total number of individuals
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TLS Online TPP Program

#Question id: 18087

#Unit 13. Methods in Biology

Each of five questions on a multiple-choice examination has four choices, only one of which is correct. The student is attempting to guess the answers. The random variable X is the number of questions answer correctly. Probability that the student will get
Exactly three correct answers
TLS Online TPP Program

#Question id: 15268

#Unit 13. Methods in Biology

During DNA isolation, phenol / chloroform extraction is performed to remove
TLS Online TPP Program

#Question id: 12001

#Unit 10. Ecological Principles

The  graph  below  shows  the  growth  rates  of  populations  of  bacteria  that  have  evolved  for  many  generations  at different culture temperatures (25°C, 30°C, and 35°C). Each population grows over only a limited range of temperatures (its thermal niche), which are bounded by its critical thermal limits. Within this range, growth rate increases with temperature up to a maximal value and then declines rapidly with increasing temperature. Growth rates are known to be the major determinant of fitness for these bacteria.


Which population has the highest fitness at 25°C ? 
TLS Online TPP Program

#Question id: 29018

#Unit 11. Evolution and Behavior

The average numbers of offspring produced by three genotypes are: A1A1=6, A1A2=3, A2A2=2, What will be the selection coefficient of theses allele?
TLS Online TPP Program

#Question id: 7192

#Unit 5. Developmental Biology

The following are statements regarding the development and maintenance of anterior and posterior compartments in each segment of Drosophila. Which of the following is correct?