纯合体黄色皱粒豌豆与纯合体绿色圆粒豌豆杂交，F1全为黄色圆粒。F1与某品种杂交，后代为四种表现型：黄色圆粒、黄色皱粒、绿色圆粒、绿色皱粒，它们的比例为1：1：1：1。以Y表示黄色，以R表示圆粒。请回答：
(1)F1的亲本黄色皱粒的基因型是__________，亲本绿色圆粒的基因型是________，某品种的基因型是__________。
(2)某品种与F1的杂交方法，在检验未知基因型的品种时常常采用，这种方法通常叫____________。
(3)若F1自交，产生的F2应有_________种表现型。若F2中的黄色皱粒为360粒，那么，在理论上，绿色圆粒的应有____________粒，其中纯合体的绿色圆粒应有_______________粒。
(1)YYrr；yyRR；yyrr
(2)测交
(3)4；360；120。
| Every group has a culture, however uncivilized it may seem to us. To the professional anthropologist, there is no intrinsic superiority of one culture over another, just as to the professional linguist, there is no intrinsic hierarchy among languages. People once thought of the languages of backward groups as undeveloped. While it is possible that language in general began as a series of grunts and groans, it is a fact established by the study of "backward" languages that no spoken tongue answers that description today. Most languages of uncivilized groups are, by our most severe standards, extremely complex. They differ from Western languages not in their sound patterns or grammatical structures, which usually are fully adequate for all language needs, but only in their vocabularies, which reflect the objects and activities known to their speakers. Even in this aspect, two things are to be noted. First, all languages seem to possess the machinery for vocabulary expansion, either by putting together words already in existence or by borrowing them from other languages and adapting them to their own system. Second, the objects and activities requiring names and distinctions in "backward" languages, while different from the West, are often surprisingly numerous and complicated. A Western language distinguishes merely between two degrees of remoteness ("this" and "that"). But some languages of the American Indians distinguish between what is close to the speaker, or to the person addressed, or removed from both, or out of sight, or in the past, or in the future. |
Every group of human beings has______.
A．its own set of ideas, beliefs and ways of life
B．an extremely complex and delicate language
C．its own elegant music, literature, and other arts
D．the process of growing crops or raising animals