Biology
Grade-8
Easy

Question

The corn that we eat today _______.

  1. Was created through selective breeding of the teosinte plant
  2. Was created by natural selection of the teosinte plant
  3. Has not changed in thousands of years
  4. None of these

hintHint:

The corn that we eat today was selected with selective breeding of the teosinte plant.

The correct answer is: Was created through selective breeding of the teosinte plant


    • About 10,000 years ago, at the beginning of human agriculture, maize cultivation has been started.
    • When early Mexican farmers decided to cultivate kernels, they made the earliest domestication of maize. They discovered that not all plants were phenotypically equal.
    • It's possible that some plants grew bigger than others, or that some kernels had greater flavors or were easier to crush.
    • The farmers kept the kernels from plants that had desirable traits and planted them for the harvest the following season.
    • Artificial selection or selective breeding are terms used to describe this technique.
    • Over time, maize cobs grew bigger and had more rows of kernels, finally taking on the shape of modern maize.

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