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#Question id: 3762

Why does a new DNA strand elongate only in the 5' to 3' direction during DNA replication?

#Section 3: Genetics, Cellular and Molecular Biology

  1. DNA polymerase begins adding nucleotides at the 5' end of the template.

  2. The polarity of the DNA molecule prevents addition of nucleotides at the 3' end.

  3. Replication must progress toward the replication fork.

  4. DNA polymerase can add nucleotides only to the free 3' end.

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TLS Online TPP Program

#Question id: 14907

#Section 1: Engineering Mathematics

Let f (x) = 2x if x < 2
               = 2 if x = 2
         = x2 if x > 2
the discontinuity of f (x) at x = 2 is known as
TLS Online TPP Program

#Question id: 14937

#Section 1: Engineering Mathematics

 Equal to
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#Question id: 8925

#Section 6: Plant, Animal and Microbial Biotechnology

What is the probable sequence in which the following clades of animals originated, from earliest to most recent?
1. tetrapods
2. vertebrates
3. deuterostomes
4. amniotes
5. bilaterians
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#Question id: 3638

#Section 3: Genetics, Cellular and Molecular Biology

Four different mutant lines showing similar phenotype were identified from a genetic screen. When genetic crosses among these mutants were carried out, the first mutant was found to complement the second, third and fourth mutant lines. However, no other complementation groups do the four mutant lines belongs to?
TLS Online TPP Program

#Question id: 3276

#Section 3: Genetics, Cellular and Molecular Biology

Which of these conditions are always true of populations evolving due to natural selection?

Condition 1: The population must vary in traits that are heritable.

Condition 2: Some heritable traits must increase reproductive success.

Condition 3: Individuals pass on most traits that they acquire during their lifetime.