直到最近，经典的遗传学和生物化学是用于研究生物体如何发育、繁殖、行为和衰老的主要技术。
Until recently, classical genetics and biochemistry were the main techniques used to investigate how organisms develop, reproduce, behave and age.
荧光原位杂交是当前分子细胞遗传学最重要的技术之一，克服了实体瘤经典细胞遗传学研究的主要障碍。
Florescence in situ hybridization (FISH), one of the most important molecular cytogenetic techniques, overcomes the main inconvenience in classical cytogenetic methods in solid tumors.
因此，家蚕分子连锁图谱和经典遗传图谱的整合成为目前家蚕遗传学的重要课题和研究热点。
Therefore, the work of integrating classical map with molecular linkage map becomes a hot focus on silkworm genetic research.
尽管DNA序列相同，单合子的双胞胎或者克隆的动物如何有不同的表现型和对同一疾病不同的易感性，经典的遗传学也不能解释。
Nor does classic genetics explain how, despite their identical DNA sequences, monozygotic twins1 or cloned animals2 can have different phenotypes and different susceptibilities to a disease.
尽管DNA序列相同，单合子的双胞胎或者克隆的动物如何有不同的表现型和对同一疾病不同的易感性，经典的遗传学也不能解释。
Nor does classic genetics explain how, despite their identical DNA sequences, monozygotic twins1 or cloned animals2 can have different phenotypes and different susceptibilities to a disease.
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