1) Individuals from different breeds are crossed to produce a new crossbreed population a) inbreeding b) cross breeing c) hybrid breeding d) reproduction 2) Selected related plants or animals are bred for several generations until the population breeds true to the desired type due to the elimination of heterozygotes. a) inbreeding b) cross breeing c) hybrid breeding d) reproduction 3) Increase in the frequency of individuals who are homozygous for recessive deleterious alleles. a) sterotypy b) misdirected behaviour c) inbreeding depression d) symbiosis 4) F1 hybrids often have increased vigour and yield. a) hybrid vigor b) stereotypy c) inbreeding depression d) photolysis 5) Carried out in a range of environments to compare the performance of different cultivars or treatments and to evaluate GM crops. a) plant field trials b) plant expermiments c) plant investigations d) plant modifications 6) In plant fiels trials this step is used to eliminate bias when measuring treatment effects. a) Randomisation of treatments b) Number of replicates c) Selection of treatments d) plant modifications 7) In plant fiels trials this step is used to ensure valid comparisons. a) Randomisation of treatments b) Number of replicates c) Selection of treatments d) plant modifications 8) In plant fiels trials this step is used to  take account of the variability within the sample. a) Randomisation of treatments b) Number of replicates c) Selection of treatments d) plant modifications

Breeding (Higher)

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