A new classification by domains separates prokaryotes into
What will be an ideal response?
Archaea and Bacteria
You might also like to view...
AGAMOUS is a gene that has been implicated in the regulation of stamen formation in Arabidopsis flowers. If this is true, a mutant with a functional AP3 gene but a nonfunctional AGAMOUS gene would
A. produce petals but not stamens. B. produce stamens but not petals. C. produce petals and stamens. D. not produce stamens or petals. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain and what do they mean? Gather Content · What do you already know about the evolution of flower development genes? Consider Possibilities · Consider the different answer options. Which can you rule out? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Morphological divergence ____
a. is the change in body form from that of a common ancestor b. is the change in body form to resemble that of an ancestor c. implies no change in body form over time d. does not occur in related species e. only occurs in unrelated species
The underlying problem in Gaucher disease is ____
a. the spontaneous breakdown of red blood cells b. the accumulation of fat in white blood cells c. the breakdown of the myelin sheath around nerves d. a hypertrophied spleen e. the lack of critical liver enzymes
Your text describes an experiment in which low-nutrient conditions select bacteria that would kill off other bacteria
When nutrients became plentiful again, these killer bacteria became less common because they had lower fitness in this environment, but they didn't become extinct. Why would some of the killer bacteria survive in the new environment? A) They're waiting for a future time when that trait may be useful again. B) They have changed the killer gene to a less costly one but can regenerate the killer gene when necessary. C) Competition must be low enough that the disadvantage of having the killer trait isn't great enough to cause extinction. D) The killer trait is a dominant trait, so it cannot be eliminated.