How can evolution select for phenotypes that postpone reproduction or sexual maturity?” There is often a trade-off between reproduction and maintenance, and in many species reproduction and senescence are closely linked. Recent studies of mice, Caenorhabditis elegans, and Drosophila suggest that there is a conserved genetic pathway that regulates aging and that it can indeed be selected for. This pathway involves the response to insulin and insulin-like growth factors, Name of these transcription factors are

TLS Online TPP Program

#Question id: 5249

#Unit 8. Inheritance Biology

What is the best explanation for why Bernard Davis didn't observe generalized transduction in his U tube experiments?

TLS Online TPP Program

#Question id: 26930

#Unit 10. Ecological Principles

Species can coexist harmoniously in which resource separation ratio d/w?

TLS Online TPP Program

#Question id: 19791

#Unit 13. Methods in Biology

Which of the following statements about polymerase chain reaction is correct?

a) PCR denaturation temperature calculated by using Y = X (1+E)n

b) Size of the primer negatively affects the efficiency of PCR

c) Standard PCR doesn’t efficiently amplify sequence much longer than about 5kb.

d) Primer annealing of PCR at 550C for 1.5 min.

e) Time taken for each cycle of PCR considerably longer than 3 min.

TLS Online TPP Program

#Question id: 8960

#Unit 9. Diversity of Life Forms

With the current molecular-based phylogeny in mind, rank the following from most inclusive to least inclusive.

1. ecdysozoan

2. protostome

3. eumetazoan

4. triploblastic

TLS Online TPP Program

#Question id: 17286

#Unit 13. Methods in Biology

Consider the following grouped frequency distribution :

 

What is the median of the distribution ?