#Question id: 20260
#Unit 12. Applied Biology
#Question id: 3781
#Unit 3. Fundamental Processes
Hershey and Chase used a DNA-based virus for their work. How might the results have been different if they had used an RNA virus?
#Question id: 4644
#Unit 11. Evolution and Behavior
The treeʹs horizontal axis is a timeline that extends from 100,000 years ago to the present; the vertical axis represents nothing in particular. The labeled branch points on the tree (V—Z) represent various common ancestors. Letʹs say that only since 50,000 years ago has there been enough variation between the lineages depicted here to separate them into distinct species, and only the tips of the lineages on this tree represent distinct species.
According to this tree, what percent of the species seem to be extant (i.e., not extinct)?
#Question id: 4808
#Unit 8. Inheritance Biology
When F1 female Drosophila of the genotype AaBbCc is test crossed, ( Gene A and B located at 10 map unit in transe configuration but gene C are independently assort for both gene. Which of the following test cross progeny that is that is more frequent?
#Question id: 11371
#Unit 9. Diversity of Life Forms
Which statement about gram-negative bacteria is correct?