What is insight learning?
What will be an ideal response?
In insight learning, an animal solves a novel problem suddenly, without having experienced it before.
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Many eukaryotic operons are subject to numerous regulatory mechanisms
Indicate whether the statement is true or false.
Which of the following statements describes the evolution by natural selection of Mycobacterium tuberculosis bacteria in their new environment?
A. The drug-resistance trait is an adaptation to the environment in which human hosts are medicated with the antibiotic rifampin. B. The drug-resistance trait is an adaptation to the environment in which human hosts travel worldwide and are exposed to new strains of bacteria. C. The drug-susceptiblity trait is an adaptation to the environment of antibacterial soaps. D. The drug-susceptiblity trait is an adaptation to the environment in which human hosts are medicated with the antibiotic rifampin.
What is the selective advantage for a male to participate in a polyandrous mating system?
A. He is more likely to obtain more mates than if he did not cooperate. B. He cannot outcompete other males for female attention. C. His offspring are unlikely to survive without his parental care. D. He cannot provide any parental care.
Two students studying physiology taste a known "bitter" substance, and both report sensing bitterness. They then sample another substance. Student A reports sensing both a bitter taste and a salty taste, but student B reports only a salty taste
What is the most logical explanation? A) Student A had an allergic reaction to the food, causing him to perceive the food as being bitter. B) Student A has normal "bitter" taste buds; student B has defective "bitter" taste buds that result in lower sensitivity to bitterness. C) Student A has a protein receptor capable of detecting a bitter molecule found in that substance, whereas student B lacks that particular protein receptor. D) Student A has normal saliva, whereas student B's saliva is more alkaline than normal.