TLS Online TPP Program

#Question id: 11162


Which statement represents the best explanation for the observation that the nuclear DNA of wolves and domestic dogs has a very high degree of homology?

#Unit 9. Evolution & Diversity of Life Forms
  1. Dogs and wolves have very similar morphologies.
  2. Dogs and wolves belong to the same order.
  3. Dogs and wolves are both members of the order Carnivora.
  4. Dogs and wolves shared a common ancestor very recently.
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TLS Online TPP Program

#Question id: 4222

#Unit 3. Fundamental Processes

Use the figure to answer the question. The figure shows a simple metabolic pathway. According to Beadle and Tatum's hypothesis, how many genes are necessary for this pathway?

TLS Online TPP Program

#Question id: 4223

#Unit 3. Fundamental Processes

Use the figure to answer the question. Refer to the metabolic pathway illustrated. If A, B, and C are all required for growth, a strain that is mutant for the gene-encoding enzyme A would be able to grow on medium supplemented with which of the following nutrient(s)?

TLS Online TPP Program

#Question id: 4224

#Unit 3. Fundamental Processes

Use the figure to answer the question Refer to the metabolic pathway illustrated. If A, B, and C are all required for growth, a strain mutant for the gene encoding enzyme B would be able to grow on medium supplemented with which of the following nutrient(s)?

TLS Online TPP Program

#Question id: 4225

#Unit 3. Fundamental Processes

The following question refers to table of codons. Which of the following sequences of nucleotides are possible in the template strand of DNA that would code for the polypeptide sequence Phe-Leu-Ile-Val?

TLS Online TPP Program

#Question id: 4226

#Unit 3. Fundamental Processes

Which of the triplets below is a possible anticodon for a tRNA that transports proline to a ribosome?

TLS Online TPP Program

#Question id: 4227

#Unit 3. Fundamental Processes

Which of the following statements supports the one gene-one enzyme hypothesis?