The expression of avr gene must be precisely regulated: it must be expressed immediately following pathogen attack but only in

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#Question id: 3657

#Unit 3. Fundamental Processes

Mutations in excision repair genes or a translesion DNA polymerase cause:

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#Question id: 15488

#Unit 12. Applied Biology

IMP biosynthetic genes constitute the pur operon and are involved in Purines synthesis. Bacterial strain used for this 

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#Question id: 5722

#Unit 8. Inheritance Biology

Meiotic products resulting from a single crossover within a pericentric inversion loop

A. This will generate a dicentric and an acentric chromosome following separation of chromosomes after crossing over

B. the inversion will completely suppress crossing over

C. All parental gametes that carry inversion chromosome are nonviable

D. All gametes from crossover products are non viable due to appearance of duplication of one arm and deletion of another arm

Which of the above statements are correct?

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#Question id: 17287

#Unit 13. Methods in Biology

Consider the following grouped frequency distribution : 

What is mean deviation about the median ?  

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#Question id: 11654

#Unit 10. Ecological Principles

Succession start from the water body and continuos in community dyanamics, changes species composition as well as changes in structure also. Which one is the correct composition of hydrosere process?