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TLS Online TPP Program

#Question id: 3801

Why should patients with xeroderma pigmentosum avoid sunlight?

#XL - Q Biochemistry

  1. The UV wavelengths do irreparable damage to DNA.

  2. Sunlight inhibits any residual DNA repair activity in the cell.

  3. These patients lack pigmentation to protect them from burning.

  4. Sunlight inhibits DNA polymerases.

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TLS Online TPP Program

#Question id: 5430

#XL - T Zoology

A plant height in Maize is control by 3 pair of polygene .Two varieties of maize averaging 120 and 60 inches in height, respectively, are crossed. The F1 progeny is quite uniform averaging 40 inches in height. What is proportional of F2 progeny that is display phenotype either 120 cm or 60 cm height?
TLS Online TPP Program

#Question id: 17271

#XL - S Microbiology

Electrophoretic resolution can be mainly change by changing the
TLS Online TPP Program

#Question id: 3868

#XL - Q Biochemistry

The sigma factor of E. coli RNA polymerase: 
TLS Online TPP Program

#Question id: 5750

#XL - S Microbiology

 type of microorganism that can exist on minimal medium
TLS Online TPP Program

#Question id: 4639

#XL - S Microbiology

If the HMS Beagle had completely bypassed the Galapagos Islands, Darwin would have had a much poorer understanding of the