Which of the following clusters of terms apply when addressing enhancers or silencers as elements associated with eukaryotic genetic regulation?
A) cis-acting, fixed position, fixed orientation
B) trans- and cis-acting, variable position
C) trans-acting, fixed position, fixed orientation
D) cis-acting, variable position, fixed orientation
E) cis-acting, variable orientation, variable position
Answer: E
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Fragile sites appear as ____________________ or ____________________ at specific sites on a chromosome
Fill in the blank(s) with correct word
A sporic life cycle is characteristic of which groups?
_____ streptophyte algae. _____ mosses. _____ ginkgos. _____ angiosperms. _____ conifers.
Pollen contains that produce .
A. gametophytes; sperm B. sporophytes; sperm C. gametophytes; spores D. sperm; spores E. sporophytes; spores
It is proposed that Cro-Magnons were responsible for the extinction of many large mammals during the Pleistocene epoch. How could this feat have been accomplished?
A. Cro-Magnon man was the first species of hominids to hunt in groups. This would have increased their chance of killing larger animals. B. Cro-Magnon man was the first species of hominid to use fire. This would have increased their success during hunting. C. Cro-Magnon man was the most efficient bipedal species. They would have been able to run after prey species more efficiently than any of their predecessors. D. Cro-Magnon man had an increase in tool technology that enabled them to kill animals from a distance.