TLS Online TPP Program

#Question id: 787


Which of the following statement is INCORRECT with respect to the structure of DNA?

#Part-B Specialized Branches in Biotechnology
  1. Six adenosines in a row in a DNA helix produce a bend of about 18 degrees.

  2. DNA was first isolated and characterized by Friedrich Miescher who called the phosphorus-containing substance “nuclein.”

  3. It is the pentoses that define the identity of a nucleic acid not the nitrogenous bases.

  4. The Z-DNA tracts do not play any role in regulating the expression of some genes or in genetic recombination.

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TLS Online TPP Program

#Question id: 5434

#Part-A Aptitude & General Biotechnology

Plant height of wild Solanum nigrum is controlled by polygene. A pure line plant with 60 cm height was cross to pure line plant having 20 cm height .All F1 plant having uniform height 40 cm. F1 plant was allowed to self-fertilization to produced 4/64 proportional of F2 plant having height 20 cm . What is number of polygene governing plant height?

TLS Online TPP Program

#Question id: 5435

#Part-A Aptitude & General Biotechnology

A polygenic trait is controlled by three genes-A, B and C. In a cross, AaBbCc x AaBbCc, what is a probability of intermediate phenotype offspring?

TLS Online TPP Program

#Question id: 5436

#Part-A Aptitude & General Biotechnology

Quantitative characteristics arise from two phenomena either polygenic or environmental influence on genotype. Which of the following is not character of quantitative polygenic trait?

TLS Online TPP Program

#Question id: 5437

#Part-A Aptitude & General Biotechnology

A pure line dominant plant has height of 100 cm while pure line of recessive plant has 20 cm. If one dominant gene contribution is 8 cm, what is number of QTL control plant height?

TLS Online TPP Program

#Question id: 5522

#Part-B Specialized Branches in Biotechnology

In reptiles, birds, and mammals, mesoderm is made by invagination and involution into the

TLS Online TPP Program

#Question id: 5524

#Part-B Specialized Branches in Biotechnology

Interaction of the optic stalk with ectoderm makes the development of the