Within allogamous plant populations, a true-breeding genetic line isolated via continuous forced inbreeding is designated__________________?
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Answer: D. Inbred
Explanation
Continuous forced inbreeding in allogamous populations isolates a true breeding line. Such a stabilized genetic line is formally designated as an inbred. Inbreeding increases homozygosity across the genome over successive generations. Allogamous species naturally rely on cross pollination for reproduction. Forced selfing or sibling mating reduces genetic diversity within the line. Inbred lines serve as essential parents for producing vigorous hybrid varieties.
Seed producers create uniform inbred lines to standardize agricultural crop traits. Maize and other staple crops depend heavily on foundational inbred development. Plant breeders use these lines to study gene action and heterosis. Hybrids result from crossing distinct inbred lines rather than isolating them. Top crosses involve specific test crossings rather than inbred line isolation. Poly crosses utilize open pollination among selected clones or parents.
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- Agriculture
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- Agriculture
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