TLS Online TPP Program

#Question id: 4724


Which of the following are true about crossing over ?

#SCPH12 I Genetics
  1. crossing over lead to homologous chromosome become identical

  2. crossing over lead to non-sister chromosome become identical

  3. crossing over lead to sister chromosome become identical

  4. crossing over lead to sister chromosome become non-identical

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TLS Online TPP Program

#Question id: 13030

#SCPH05 I Biotechnology

The mutation in Vir F will cause the interference in –

TLS Online TPP Program

#Question id: 16134

#SCPH01 Biochemistry

You obtain 6 BACs (of known order, as shown below) and 7 STSs (of unknown order) that derive from a region of mouse chromosome 16 whose genomic sequence has not yet been finished.   
 
By PCR (using 20-bp primers at either end of each STS), you test each of the 6 BACs for the presence (+) or absence (-) of each of the 7 STSs. You obtain the following results:
 
You determine the DNA sequences of PCR products obtained at STS5 using BACs B, C, D, E, and F as PCR templates. The DNA sequences of PCR products obtained using BACs B and C are identical, but they differ by several nucleotide substitutions from the DNA sequences of PCR products obtained using BACs E and F. Oddly, PCR product obtained using BAC D appears to be a mixture of two sequences – one corresponding to the BAC B/ BAC C sequence and the other corresponding to the BAC E/ BAC F sequence. Briefly account for these findings, and explain how a single PCR assay could amplify two different sequences.

TLS Online TPP Program

#Question id: 317

#SCPH28 | Zoology

Hydrogen bonds can occur when hydrogen is covalently bonded to atoms like nitrogen and oxygen. What property of nitrogen and oxygen is important for this?

TLS Online TPP Program

#Question id: 5060

#SCPH01 Biochemistry

Proteoglycans are large molecules consist of core proteins with covalently attached glycosaminoglycan polysaccharide side chains. They play critically important roles in the delivery of the

TLS Online TPP Program

#Question id: 19893

#SCPH06 I Botany

Which one of the following sensors converts the light into an electronic signal?