TLS Online TPP Program

#Question id: 5451


High heritability is best demonstrated in which of the following situations?

#Unit 8. Inheritance Biology
  1. Within a wild population of clover plants, there is a very low amount of variation in the number of leaves per stem.

  2. When studying obesity in a human population, there tends to be less variation within families than across the entire population.

  3. in a study of adopted children, the children's height is much more similar to that of their biological parents than their adoptive parents.

  4. The DNR maintains records of deer shot each hunting season. In drought years, the average weight is much lower than in years of sufficient rain.

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TLS Online TPP Program

#Question id: 3841

#Unit 3. Fundamental Processes

The DNA replication occurs in a semi-conservative manner which means

TLS Online TPP Program

#Question id: 3842

#Unit 3. Fundamental Processes

Which of the following statements correctly describes the difference between the leading strand and the lagging strand in DNA replication?

TLS Online TPP Program

#Question id: 3843

#Unit 3. Fundamental Processes

In DNA replication in E. coli, the enzyme primase is used to attach a 5 to 10 base ribonucleotide strand complementary to the parental DNA strand. The RNA strand serves as a starting point for the DNA polymerase that replicates the DNA. If a mutation occurred in the primase gene, which of the following results would you expect?

TLS Online TPP Program

#Question id: 3844

#Unit 3. Fundamental Processes

The lagging strand is characterized by a series of short segments of DNA (Okazaki fragments) that will be joined together to form a finished lagging strand. The experiments that led to the discovery of Okazaki fragments gave evidence for which of the following ideas?

TLS Online TPP Program

#Question id: 3845

#Unit 3. Fundamental Processes

The replisome, which synthesizes DNA on both leading and lagging strands, always moves toward the replication fork. This must mean that:

TLS Online TPP Program

#Question id: 3846

#Unit 3. Fundamental Processes

A heat-sensitive DNA ligase (25°C permissive, 37°C nonpermissive) has been used to show that DNA synthesis is discontinuous. Examination of DNA replication in the presence of [3H]-thymidine in the mutant would demonstrate which of following?