TLS Online TPP Program

#Question id: 12488


Retinoblastoma usually occurs as a sporadic event but in around 10% of cases there is a positive family history due to autosomal dominant inheritance. In these families the penetrance is approximately 80% (= 0.8). A woman with retinoblastoma, whose father and grandfather were also affected, has an unaffected partner with no relevant family history. Which of the following is correct regarding their children?

#Part-A Aptitude & General Biotechnology
  1. The probability that their first child will be affected is 0.25.
  2. The probability that their first child will be affected is 0.4.
  3. The probability that each of their children will be affected is 0.5.
  4. The probability that each of their children will be affected is 0.4 X 0.5.
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TLS Online TPP Program

#Question id: 11609

#Part-B Specialized Branches in Biotechnology

All of gibberellins are tetracyclic diterpenoid acids, but only a few of which, have intrinsic biologically active gibberellins these are__

TLS Online TPP Program

#Question id: 11609

#Part-A Aptitude & General Biotechnology

All of gibberellins are tetracyclic diterpenoid acids, but only a few of which, have intrinsic biologically active gibberellins these are__

TLS Online TPP Program

#Question id: 11611

#Part-B Specialized Branches in Biotechnology

Given below are names of phytohormones in column I and their associated features/effects/ functions in column II.

                     

                    Column I

             ( Phytohormones)

                

                        Column II

                       ( Features)

 

A) Auxin

 

i)  Causes seed germinations

 

B) Cytokinin

 

ii)  Plant Stress Hormone that activates many defense responses

 

C) ABA

 

iii) Polar transport

 

D) Gibberellin

 

iv)  Delayed leaf senescence

 

E) Jasmonic acid

 

v) Causes seed dormancy

 

 







Which of the following combination from the above statements is  correct? 

TLS Online TPP Program

#Question id: 11612

#Part-B Specialized Branches in Biotechnology

AMO-1618, which blocks GA biosynthesis at the cyclization step, what would be the A, B and C represents. where, the control shows no inhibitor;


TLS Online TPP Program

#Question id: 11628

#Part-A Aptitude & General Biotechnology

Two  varieties of maize averaging of 180 cm and  20cm, inches in height respectively, are crossed. The F1 progeny is quite uniform averaging  100cm in height. How many different  Phenotype express in f2 generation?


TLS Online TPP Program

#Question id: 11629

#Part-A Aptitude & General Biotechnology

Two pure line plants of 46 cm and 10 cm in height cross each other forming F1 progeny 28 cm in height,  what is the no. of QTL formed?