TLS Online TPP Program

#Question id: 806


A single-stranded DNA molecule contains 40 nucleotides with equal amounts of A, C, G, and T. This DNA strand can combine with a complementary DNA strand to form a double-stranded DNA molecule. Which characteristic does this double-stranded molecule have when it forms a B-DNA structure?

#SCPH05 I Biotechnology
  1. The two strands will have parallel orientation and identical sequences.

  2. The helix will be right-handed with 12 base-pairs per turn.

  3. Every base-pair will contain one purine and one pyrimidine.

  4. There are both covalent and non-covalent bonds between the two chains.

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TLS Online TPP Program

#Question id: 15615

#SCPH01 Biochemistry

The three stop codons are (I) 5’UAG3’, (II) 5’UAA3’, and (III) 5’UGA3’. when mutagens that specifically induce G•C to A•T mutations on 5’, then what will be the result?

TLS Online TPP Program

#Question id: 15615

#SCPH06 I Botany

The three stop codons are (I) 5’UAG3’, (II) 5’UAA3’, and (III) 5’UGA3’. when mutagens that specifically induce G•C to A•T mutations on 5’, then what will be the result?

TLS Online TPP Program

#Question id: 15615

#SCPH28 | Zoology

The three stop codons are (I) 5’UAG3’, (II) 5’UAA3’, and (III) 5’UGA3’. when mutagens that specifically induce G•C to A•T mutations on 5’, then what will be the result?

TLS Online TPP Program

#Question id: 15616

#SCPH01 Biochemistry

The diagram below shows the F factor and a portion of the E. coli chromosome that has three different insertion sequences (IS) of the same type as is carried on F.
                     
Describe the three different Hfrs (Hfr #1, Hfr #2 and Hfr #3) that can be formed by recombination between the IS on F and each of the IS sequences on the chromosome. Some including the positions of each of the markers (A, B, C, and D) and state which of these markers would be transferred early?

TLS Online TPP Program

#Question id: 15616

#SCPH06 I Botany

The diagram below shows the F factor and a portion of the E. coli chromosome that has three different insertion sequences (IS) of the same type as is carried on F.
                     
Describe the three different Hfrs (Hfr #1, Hfr #2 and Hfr #3) that can be formed by recombination between the IS on F and each of the IS sequences on the chromosome. Some including the positions of each of the markers (A, B, C, and D) and state which of these markers would be transferred early?

TLS Online TPP Program

#Question id: 15616

#SCPH28 | Zoology

The diagram below shows the F factor and a portion of the E. coli chromosome that has three different insertion sequences (IS) of the same type as is carried on F.
                     
Describe the three different Hfrs (Hfr #1, Hfr #2 and Hfr #3) that can be formed by recombination between the IS on F and each of the IS sequences on the chromosome. Some including the positions of each of the markers (A, B, C, and D) and state which of these markers would be transferred early?