TLS Online TPP Program

#Question id: 3823


Regarding DNA replication and DNA synthesis, which, if any, of the following statements is incorrect?

#Unit 3. Fundamental Processes
  1. The leading strand is replicated continuously.

  2. The lagging strand is replicated discontinuously: the new DNA is synthesized as short pieces of DNA that must be ligated together.

  3. A DNA polymerase always requires a DNA template to synthesize a complementary DNA.

  4. A DNA polymerase requires a short RNA primer when synthesizing new DNA strands using a DNA template.

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TLS Online TPP Program

#Question id: 5218

#Unit 11. Evolution and Behavior

Several of the different globin genes are expressed in humans, but at different times in development. What mechanism could allow for this?

TLS Online TPP Program

#Question id: 5219

#Unit 11. Evolution and Behavior

What is it that can be duplicated in a genome?

TLS Online TPP Program

#Question id: 5220

#Unit 11. Evolution and Behavior

In comparing the genomes of humans and those of other higher primates, it is seen that humans have a large metacentric pair we call chromosome #2 among our 46 chromosomes, while the other primates of this group have 48 chromosomes and any pair like the human #2 pair is not present; instead the primate groups each have two pairs of midsize acrocentric chromosomes. What is the most likely explanation?

TLS Online TPP Program

#Question id: 5221

#Unit 11. Evolution and Behavior

Unequal crossing over during Prophase I can result in one sister chromosome with a deletion and another with a duplication. A mutated form of hemoglobin, known as hemoglobin Lepore, is known in the human population. Hemoglobin Lepore has a deleted set of amino acids. If it was caused by unequal crossing over, what would be an expected consequence?

TLS Online TPP Program

#Question id: 5222

#Unit 11. Evolution and Behavior

 When does exon shuffling occur?

TLS Online TPP Program

#Question id: 5223

#Unit 11. Evolution and Behavior

In order to determine the probable function of a particular sequence of DNA in humans, what might be the most reasonable approach?