What is crop domestication?

Crop Domestication and Loss of Genetic Diversity

Flashcard
•
Biology
•
12th Grade
•
Hard
masakala tzudir
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10 questions
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1.
FLASHCARD QUESTION
Front
Back
Crop domestication is the process by which a plant's native characteristics are altered so that it cannot grow and reproduce without human intervention.
2.
FLASHCARD QUESTION
Front
What is co-evolution in the context of crop domestication?
Back
Co-evolution refers to the symbiotic relationship between plants and humans, where both evolve to suit one another's needs.
3.
FLASHCARD QUESTION
Front
What are the three stages of crop domestication?
Back
1. Pre-adapted wild plants colonize open ground around human habitation. 2. Seeds are regularly harvested and protected from herbivores. 3. Humans learn the timing of sowing and plant husbandry.
4.
FLASHCARD QUESTION
Front
What are some reductions or losses due to domestication?
Back
Loss of seed viability, protective coverings, shattering, seed dormancy, sturdiness, photoperiodic response, number of seeds, and resistance to abiotic stresses.
5.
FLASHCARD QUESTION
Front
What are some improvements or increases due to domestication?
Back
Increased adaptability, size of fruits, size of seeds, palatability, chemical composition, yielding ability, and uniform flowering.
6.
FLASHCARD QUESTION
Front
What is the technological drawback of improved crop varieties?
Back
Improved varieties eliminate the genetic resources upon which they are based.
7.
FLASHCARD QUESTION
Front
What has happened to genetic diversity over the past 10,000 years?
Back
Genetic diversity has been replaced with a relatively small number of varieties bred for high input agriculture.
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