单语范例（未经PONS编辑处理）
英语
- True breeding pairs are rare in amphibians or reptiles, but fairly common with fish (e.g. discus) and especially birds.en.wikipedia.org
- This is possible with doubled haploidy organisms because of their true breeding nature and because they can conveniently be produced in large numbers.en.wikipedia.org
- Even among true breeding organisms, some variation due to genetic recombination or to mutation can produce a few off types.en.wikipedia.org
- To carry out such a cross, each parent is chosen to be homozygous or true breeding for a given trait (locus).en.wikipedia.org
- All parent organisms must be true breeding to properly carry out such an experiment.en.wikipedia.org
- True breeding organisms are always homozygous for the traits that are to be held constant.en.wikipedia.org
- These populations are reportedly true breeding.en.wikipedia.org
- An organism is referred to as true breeding for each trait to which this applies, and the term true breeding is also used to describe individual genetic traits.en.wikipedia.org
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英语