TLS Online TPP Program

#Question id: 5104


 In humans, identical twins are possible because ________.

#SCPH01 Biochemistry
  1. cytoplasmic determinants are distributed unevenly in unfertilized eggs

  2. extraembryonic cells interact with the zygote nucleus

  3. early blastomeres can form a complete embryo if isolated

  4. the gray crescent divides the dorsal-ventral axis into new cells

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TLS Online TPP Program

#Question id: 13110

#SCPH05 I Biotechnology

With the help of DNA fingerprinting which can be used to determine paternity. There are three babies (Baby A, Baby B and Baby C) in a maternity ward, and three sets of confused and worried parents. (Father and Mother #1 are a couple, as are Father and Mother #2, and Father and Mother #3.) 
You do each PCR reaction on chromosome 15 and load each one into a separate well of an agarose gel, and then run the gel.
 

 
Match the babies up with their actual parents.
 

TLS Online TPP Program

#Question id: 4924

#SCPH28 | Zoology

Following statement given for a character

A- Characteristics based on autosomal genes

B- Biparntal inheritance

C-pattern of gene expression depend on parental origin

Which of the following having above statements feature?

TLS Online TPP Program

#Question id: 4940

#SCPH28 | Zoology

In their laboratory simulations of the early Earth, Miller and Urey observed the abiotic synthesis of

TLS Online TPP Program

#Question id: 426

#SCPH05 I Biotechnology

Which statement is not true about catabolic pathways?

TLS Online TPP Program

#Question id: 13059

#SCPH28 | Zoology

Precision will be reduced, but yield will be increased
Optimisation of a PCR reaction is often a compromise between the competing demands for precision, efficiency and yield. Although the specific effects may vary, generally, increasing the annealing temperature will increase non-specific primer binding and reduce precision. Increasing the length of the elongation phase will reduce the proportion of incomplete newly-synthesised strands and therefore increase yield. In this case, the potential effect on efficiency is unclear. Increasing the elongation phase would increase the reaction time, but the time taken to ramp down to a lower annealing temperature would be reduced.
Efficiency during ligation of blunt ended insert and vector cannot be cannot be enhanced by means of…..