In Exercise 3 (Diverging Lineages), you generated a best fit line for difference
ID: 178700 • Letter: I
Question
In Exercise 3 (Diverging Lineages), you generated a best fit line for differences vs. generation. What was the slope of that line? Positive Negative Flat Unknown, because the line could not be generated. Bette Korber created an evolutionary tree tor HIV to infer the likely sequence of the last common ancestor for HIV and SIV. Which of the following genetic sequences did she use to construct her tree? Recent SIV samples Recent HIV samples The first known HIV patient The first known SIV primate Which of the following evolutionary mechanisms is required to establish a molecular clock? Migration Natural selection Mutation In the lab you just completed, what does a sleeper slope of the best-fit line of genetic differences versus generation indicate? Fast infection rate of the virus. Slow infection rate of the virus. Rapid divergence between virion populations Slow divergence between virion populationsExplanation / Answer
4.The correct answer is :Negative
Reason:For diverging lineages from a common ancestor, the slope of line will be negative..
5.The correct answer is :Recent HIV sample
Reason:Bette Korber used samples from people who were chronic and acute HIV patients from around the world.
6.The correct answer is :Mutation
Reason:In order to study how two or more life forms diverged, molecular clocks are established taking into account mutations in biomolecules.
7.The correct answer is :Rapid divergence between virion populations.
Reason: Steeper slopes indicate rapid divergence.