Protobionts are vesicle-like assemblages of abiotically-produced organic polymers
______________ Indicate whether the statement is true or false.
True
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If DNA replication took place from one end of the largest human chromosome to the other, it would take approximately:
A. 2 seconds. B. 2 minutes. C. 2 hours. D. 2 days. E. 2 months.
Salamanders normally go through a juvenile stage in which they have external gills. Most salamanders lose these gills when they develop into adults, but axolotl salamanders retain gills into adulthood by suppressing metamorphosis. This is an example of
A. gene duplication. B. co-opting a gene for a new function. C. homeosis. D. heterochrony. 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 heterochrony? 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?
In humans, the sex of the offspring is determined by the
A) cytoplasm carried by the egg cell. B) sex chromosome carried by the egg cell. C) autosomes carried by the egg cell. D) sex chromosome carried by the sperm cell. E) autosomes carried by the sperm cell.
Which joint has the greatest range of motion?
A. fibrous B. suture C. cartilaginous D. synovial E. All of these are equally movable.