TLS Online TPP Program

#Question id: 10373


The nodulation (nod) genes are classified as common nod genes or host specific nod genes. Some statements related to such classification are given below;

a) nod A is a common nod gene and nod Q is a host specific gene

b) nod B is a common nod gene and nod C is a host specific gene

c) nod C is a common nod gene and nod H is a host specific gene

d) nod H is a common nod gene and nod P is a host specific gene

Choose the correct answer from the above statements:

#Unit 6. System Physiology – Plant
  1. Only D       
  2. A and B
  3. Only C      
  4. C and D
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TLS Online TPP Program

#Question id: 3463

#Unit 11. Evolution and Behavior

Which one of the following statements is INCORRECT?

TLS Online TPP Program

#Question id: 4716

#Unit 11. Evolution and Behavior

Which of the following is correct match?

AWallaceI Changes in allele frequency due to random genetic drift
BSewall WrightII Evolution by natural selection
CCarl WoeseIII hybrid sterility
DHaldane's ruleIV DNA sequencing led to molecular phylogenetics

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

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: 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: 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?