Both pathogenic bacteria and primary symbionts have a tendency to lose genes for catabolic pathways
Indicate whether the statement is true or false.
Answer: FALSE
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Many seeds are capable of surviving in a dormant or quiescent state for many years, or even centuries. Such seeds are not usually damaged by environmental extremes that would kill most other organisms
What main adaptation prevents the seeds from germinating before they are dispersed, and allows them to survive until environmental conditions are favorable for germination and seedling growth? A) A seed coat B) Two cotyledons C) A large quantity of stored nutrients D) Desiccation to 2-20 percent water E) Double fertilization
By using fossil evidence, paleontologists have concluded that most species exist from years before becoming extinct.
A. 100 to 1,000 B. 1 million to 10 million C. 10,000 to 100,000 D. 1,000 to 10,000 E. 100,000 to 1 million
The two divisions of the peripheral nervous system include the central nervous system and the autonomic nervous system.
Indicate whether the statement is true or false.
The Abuja family had 10 children by 1950, but because of ill health, there is now only one surviving grandchild. The Bacchus family had three children in 1950 and now has six grandchildren. Which statement about these families is correct?
A) The Abuja family had more gene drift. B) The Abuja family had greater gene flow. C) The Bacchus family exhibits the bottleneck effect. D) The Bacchus family has greater fitness.