Which one of this is not a normal base found in tRNA?

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#Question id: 13147

#Unit 8. Inheritance Biology

A cross was made between pure Blue and long pollen length with white and short pollen length. The F1 were test crossed. The F2 progeny obtained was as follows:

The genetic distance (cM) between flower colour and pollen length is;

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#Question id: 1250

#Unit 4. Cell Communication and Cell Signaling

Few mutants (column A) and their results (column B) are listed in the table given below:

Column A	Column B
A. Gain-of-function of Ski	I. Inhibits the ability of activated type I TGF-β receptors (RI) to phosphorylate R-Smad proteins
B. Loss-of-function of RII receptor	II. Transcription activation induced by TGF-β and mediated by Smad complexes is shut down
C. Gain-of-function of smad-7
D. Loss-of-function of R-smad

Match the correct mutation with the observe result?

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#Question id: 10574

#Unit 10. Ecological Principles

Which of the following statements about the evolution of life histories is correct?

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#Question id: 5358

#Unit 8. Inheritance Biology

In the following pedigree, individuals with shaded show presence of a recessive autosomal trait. If all individual is coming from outside the family is homozygous for normal. The calculated risk of occurrence of this trait for (?) individual is 

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#Question id: 19076

#Unit 4. Cell Communication and Cell Signaling

Pathogen Pseudomonas  produces toxins which causes avirulence, known as