TLS Online TPP Program

#Question id: 4699


The theory of evolution is most accurately described as

#Unit 9. Evolution & Diversity of Life Forms
  1. an educated guess about how species originate.

  2. one possible explanation, among several scientific alternatives, about how species have come into existence.

  3. an opinion that some scientists hold about how living things change over time.

  4. an overarching explanation, supported by much evidence, for how populations change over time.

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TLS Online TPP Program

#Question id: 19797

#Unit 13. Advances in Biotechnology

 Which type of cry genes are used for the production of transgenic plants

TLS Online TPP Program

#Question id: 19798

#Unit 13. Advances in Biotechnology

Resistance to Cry proteins may be due to 
1. reduced binding of the toxin to midgut epithelium 
2. complete degradation of Cry proteins
3. Increased binding of the toxin to midgut epithelium 
4. Antisense inhibition of the transcript
Which of the following options is correct?

TLS Online TPP Program

#Question id: 19799

#Unit 13. Advances in Biotechnology

Resistance to cry proteins may be due to _________binding of the toxin to midgut epithelium

TLS Online TPP Program

#Question id: 19800

#Unit 13. Advances in Biotechnology

What happens to cry protiens which is due to reduced binding of the toxin to midgut epithilium

TLS Online TPP Program

#Question id: 19801

#Unit 13. Advances in Biotechnology

The inheritance of resistance to Cry proteins in insect populations is usually _______ and is governed by one or few major genes

TLS Online TPP Program

#Question id: 19802

#Unit 13. Advances in Biotechnology

The low expression level of cry genes seems to be due to the presence in them of sequences not commonly found in plant coding regions. Such as
(1) Localized A+T-rich regions resembling plant intrans 
(2) 18 potential plant polyadenylation signal sequences 
(3) 13 ATTTA sequences, which destabilize mRNA
(4) Codons that are rarely used in plants
Which of the above statements are correct?