Biology
Grade-8
Easy
Question
The corn that we eat today _______.
- Was created through selective breeding of the teosinte plant
- Was created by natural selection of the teosinte plant
- Has not changed in thousands of years
- None of these
Hint:
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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