TLS Online TPP Program

#Question id: 11353


Prior to the availability of a measles vaccine, outbreaks of measles occurred at two-year intervals, why?

#Unit 10. Ecological Principles
  1. Measles outbreaks occurred during hard winters, which happen every other year
  2. Two years were required for accumulation of enough susceptible infants
  3. Immunity to measles wore off in about two years
  4. Two years were required for the measles virus to disperse from tropical sources
More Questions
TLS Online TPP Program

#Question id: 3503

#Unit 11. Evolution and Behavior

Following figure shown mate choice, following some statement is given

A) Male mate choice

B) More variance of matting success in female

C) Polygyny

D) More variance of matting success in male

E) Female mate choice

F) Polyandry

TLS Online TPP Program

#Question id: 3504

#Unit 11. Evolution and Behavior

Bird has a choice of four food resource with following character . assume all resource are equally abundant Following sequence of preference for resource ?

TLS Online TPP Program

#Question id: 3505

#Unit 11. Evolution and Behavior

Patterns of relatedness are different in hymenopterans, which are haplodiploid. Which of the following value of relatedness R1, R2, R3 and R4 respectively in figure?

TLS Online TPP Program

#Question id: 3506

#Unit 11. Evolution and Behavior

An altruist provides help worth 9 units of fitness to a recipient, at a personal cost of 2 unit of fitness. As per kin-selection theory, the minimum value of genetic relatedness between the actors and the recipients that is necessary to maintain altruism in the population is

TLS Online TPP Program

#Question id: 3507

#Unit 11. Evolution and Behavior

Rank the following from most general to most specific:

A. gametic isolation

B. reproductive isolating mechanism

C. pollen-stigma incompatibility

D. prezygotic isolating mechanism

TLS Online TPP Program

#Question id: 3508

#Unit 11. Evolution and Behavior

In these cases, females would indirect benefit by choosing the male that having which of following attribute 

a. can provide the best care

b. provide no care, but maintain territories

c. Large males, have probably been successful at living long, acquiring a lot of food and resisting parasites and disease

d. The long tail of the peacock