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若要根据后代在幼体时的表现型确定其性别,就要让杂交的后代雄性是一种表现型,雌性是另外的一种表现型,这样才能从性状上加以区分。利用性染色体形态相同的隐性性状与性染色体形态不同的显性性状杂交,后代雌雄各表现出一种性状,可解决遗传实践中的具体问题。2011年高考安徽卷(见例题)中出现利用家蚕幼体的体色来判断其性别,因为雄蚕产丝多、效益好,所以在生产实践中人们会尽量会多养雄蚕。这使笔者联想到:在《生物·必修2·遗传与进化(人教版)》第2章第3节“伴性遗传”一节中,最后描述了伴性遗传
To determine the gender of an offspring based on the phenotype of the offspring, make the progeny of the offspring male is a phenotype and the female is another phenotype in order to be able to distinguish from the trait. Utilizing the dominant trait with the same sex chromosome and the dominant trait with different sex chromosomes, the male and female of the offspring each exhibited a trait that could solve the specific problems in the genetic practice. 2011 Anhui University Entrance Examination (see example) appear to use silkworm larvae body color to determine the gender, because the male silkworm silk production, good efficiency, so in production practice, people will try to raise more male silkworm. This reminds me of the fact that in Section 2, Section 3, “Conjugated Inheritance”, Chapter 2 of "The Biology Compulsory 2 · Genetics and Evolution (PEP)