Briefly explain some of the advantages and disadvantages of living in social groups
What will be an ideal response?
Social animals face more competition for food, nesting sites, and other resources. They also tend to
contract diseases and parasites more easily, due to frequent contact between individuals. The
advantages of social behavior include safety in numbers for prey animals. Predators can take on larger
prey when working together. In higher animals, learning may take place more effectively in social
groups.
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The DNA molecule is made up of _____ strand(s) and the RNA molecule is made up of _____ strand(s)
a. 1; 2 b. 2; 1 c. 4; 2 d. 1; 1 e. 2; 4
Differences in domesticated animals over relatively short periods of time most likely occur through:
A. natural selection B. adaptation C. artificial selection D. experimental selection E. evolution
If nondisjunction occurs in meiosis II during gametogenesis, what will be the result at the completion of meiosis?
A) All the gametes will be diploid. B) Two gametes will be n + 1, and two will be n - 1. C) One gamete will be n + 1, one will be n - 1, and two will be n. D) There will be three extra gametes. E) Two of the four gametes will be haploid, and two will be diploid
Which taxonomic group of microorganisms is primarily responsible for the oxygenation of Earth?
a. anaerobic bacteria b. cyanobacteria c. filamentous algae d. purple phototrophic bacteria