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#Question id: 5693


Type of nondisjunction leads to regions of tissue with different chromosome constitutions, a condition known as mosaicism is due to

#Unit 8. Inheritance Biology
  1. Nondisjunction in a mitotic division

  2. Non disjunction in meiosis I 

  3. Non disjunction in meiosis I        

  4. Non disjunction in meiosis I  an II

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TLS Online TPP Program

#Question id: 4957

#Unit 11. Evolution and Behavior

How many half-lives should have elapsed if 6.25% of the parent isotope remains in a fossil at the time of analysis?

TLS Online TPP Program

#Question id: 10535

#Unit 6. System Physiology – Plant

The insect ingests plant tissue containing the fatty acids, an enzyme in the gut conjugates the plant-derived fatty acid to an insect-derived amino acid to form an elicitor, When plants recognize elicitors from insect saliva induces some typical responses such as

a) Increasing Ca2+ levels in the cytosol and then activate an array of target proteins, such as calmodulin and other Ca2+-dependent protein kinases

b) In Arabidopsis, a calmodulin-binding transcriptional regulator called IQD1 was identified as an important mediator of defense responses against insect herbivory

c) overexpression of IQD1 in Arabidopsis activate the herbivore activity

d) IQD1 binds calmodulin, a major Ca2+-binding protein, in a Ca2+-dependent manner and subsequently inhibits the gene involved in glucosinolate biosynthesis

Which of the following combination from above statements is correct?

TLS Online TPP Program

#Question id: 19470

#Unit 12. Applied Biology

From where did this GOX gene has been isolated from and expressed in transgenic plants?

TLS Online TPP Program

#Question id: 5058

#Unit 5. Developmental Biology

 In the formation of vertebrate eye, optic vesicle and head ectoderm are-

TLS Online TPP Program

#Question id: 12467

#Unit 10. Ecological Principles

Review the formula for effective population size. Imagine a population of 1,000 small rodents. Of these, 300 are breeding females, 300 are breeding males, and 400 are nonbreeding  juveniles.  What is the effective  population size?