Which of the following is NOT a part of Darwin’s theory of evolution by natural selection?
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Question 2
2.
Blue jays are birds that live in the forest. They can have beaks of different thicknesses.
Blue jays use their beaks to get to the seeds they eat. Blue jays with thinner beaks can easily reach and eat the seeds inside pinecones. Blue jays with thicker beaks can easily open and eat seeds with hard shells.
The image below shows three possible blue jay populations.
If the environment changes to have only seeds in pinecones, which of the following blue jay populations will most likely survive?
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Question 3
3.
In the imaginary world of Eos a species of bird called the Chocobo comes in three colors: yellow, white, and black, in which black is the most genetically dominant trait and white is recessive. A cataclysmic event occurred when a rogue meteor strikes the planet and sends up a vast amount of dust into the atmosphere, blocking out the sun. Consequently, the sun’s rays were not able to penetrate through the thick cloud well and thus was not warming up the surface. The climate cooled to the point that it snowed year round across the globe. After three years the population of the yellow and black Chocobo declined drastically while the white Chocobo thrived. Which of the following statements best explains the trend?
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Question 4
4.
A patient with HIV is treated with a new drug, 3TC. Within a few weeks of treatment, the HIV viruses consist entirely of 3TC-resistant viruses. How can this result best be explained?
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Question 5
5.
Which of the following is an example of an adaptation?