Briefly explain how play behavior might have survival value and thus be affected by natural selection
What will be an ideal response?
Playful behaviors provide a chance for juvenile animals to practice behaviors that will be important later in life. For example, the play behaviors of many different species of mammals are similar to the hunting and escaping behaviors of adults. If play behavior has a genetic (innate) component, then natural selection is expected to favor individuals that play as juveniles.
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The extinction of the dinosaurs is believed to have been caused by ________
a. competition from mammals b. a natural global cooling cycle c. an asteroid impact d. disease
What cultural trait is unique to hominins? What will be an ideal response?
In humans, colorblindness is a recessive, X-linked genetic disorder. What pattern of inheritance does this illustrate?
A.) sex-linked B.) multiple alleles C.) co-dominance D.) incomplete dominance
What is the benefit of mutations?
A) They create cancerous cells, which grow faster than others. B) They increase the shuffling of existing genetic information. C) They add new genetic information upon which evolution can act. D) They eliminate unneeded regions of chromosomes.