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TLS Online TPP Program

#Question id: 23895

Which technique separates nucleic acids (DNA and RNA) by molecular weight?

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology
  1. gel electrophoresis
  2. in situ hybridization
  3. microarray analysis
  4. PCR
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TLS Online TPP Program

#Question id: 5151

#General Aptitude

If x and y are the two digits of the number 653 xy such that this number is divisible by 80, then x+y= ?
TLS Online TPP Program

#Question id: 16784

#Section 1: Engineering Mathematics

Median of 5,7,6,1,8,10,12,4 and 3 is 
TLS Online TPP Program

#Question id: 14550

#Section 1: Engineering Mathematics

The series 1 - 2 + 3 - 4 + 5 - 6 + . . . . is
TLS Online TPP Program

#Question id: 4752

#Section 3: Genetics, Cellular and Molecular Biology

Red-green color blindness is caused by a sex-linked recessive allele. A color-blind man marries a woman with normal vision whose father was color-blind. What is the probability that they will have a color-blind daughter? What is the probability that their first son will be color-blind respectively?
TLS Online TPP Program

#Question id: 12909

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

According to the diagram, arrange the steps in correct order: 


1. DNA is then digested by the Cas9 nuclease at specific points on both DNA strands. 
2. Homologous recombination to repair the break and incorporate the new DNA sequence then follows. 
3.The nuclease Cas9 is targeted to DNA by a guide RNA consisting of a specific 20 nucleotide spacer/targeting sequence (crRNA).
 4. That identifies the DNA to be modified, linked to a trans-activating (tracrRNA) sequence necessary for the recruitment and stability of Cas9 nuclease.