题目内容
（请给出正确答案）
A．senses.
B．sounds.
C．objects.
D．ideas.
简答题官方参考答案
（由简答题聘请的专业题库老师提供的解答）
更多“Language is said to be arbitrary because there is no logical connection between meanings a”相关的问题
A、facial expressions
B、childraising beliefs
C、style of dress
D、rules of etiquette
A、far fewer double-crossover recombinant progeny were recovered from a testcross than would be expected from the map distances of the genes involved.
B、crossing over has been enhanced for genes that are located near the centromere of chromosomes because there is less interference of one crossover on the occurrence of a second crossover event.
C、single-crossover recombinant classes in the progeny have been increased because the genes involved produce lethal phenotypes when in parental gene combinations.
D、there is a large map distance between one of the outside genes in the heterozygous parent and the middle gene, while there is a short map distance between the middle gene and the other outside gene.
E、the physical distance between two genes is very short compared with the genetic map distance between these two genes.
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