Multiple Choice
Plant breeding has been utilized for centuries to improve the quality of crop plants. One of the most successful breeding methods uses hybrids, which are produced when
A) highly inbred varieties of plants are mated to each other.
B) distantly related species with beneficial features are mated to each other.
C) one or more genes from one variety of plant is inserted into another variety.
D) farmers provide relatively little care to a crop and allow natural selection to identify the hardiest variety.
Correct Answer:

Verified
Correct Answer:
Verified
Q19: In the United States corn hybrids have
Q20: All of the following except _ is
Q21: Farming, as it is currently practiced, may
Q22: Breeding plants for modern farming has had
Q23: The amount of crop, measured by weight
Q25: The process of inserting a gene unique
Q26: In addition to producing seeds with very
Q27: Plant breeding techniques use artificial _ to
Q28: Although enough food is grown to meet
Q29: The increase in the growth rate of