Mutations
A) can be helpful, neutral, or harmful to individuals.
B) limit the potential for evolution.
C) arise due to environmental pressures.
D) are caused by natural selection.
A
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Which one of the following types of fatty acids would be likely to have the lowest melting temperature?
A. long tails and low saturation B. long tails and high saturation C. short tails and low saturation D. short tails and high saturation E. All fatty acids have the same melting temperature regardless of tail length or level of saturation.
Which trait is a characteristic of most monocots?
a. four or five floral parts, or multiples of four or five b. three furrows with pores on pollen grain c. vascular bundles organized as a ring in ground tissue d. branching fibrous root system e. two seed leaves of embryo inside the seed
Researchers noted that only a few aphids changed color to green from their original red. This is an unusual observation among any animals. What research question came out of the observations?
A. Is the color shift of certain aphids due to genetics within a select species? B. Is the color shift of certain aphids due to changes in weather conditions? C. Is the color shift of certain aphids due to genetics or some other factor? D. Do other aphids change colors as they age? E. Will green aphids change their color to red, or remain green as they age?
What is the term for movement of water and nutrients between biotic and abiotic portions of an ecosystem?
A) decomposer-detrital cycling B) biogeochemical cycling C) bio-cycling D) energy cycling