Choose the correct sentence below. A: Sperm and egg cells are haploid cells B: The sperm is haploid, but the egg is diploid C: Sperm and egg are diploid cells D: The sperm is diploid, but the egg is haploid

The Apomixis of plants are A: Adventitious embryo B: Parthenogenesis C: Patrogenesis D: Diploid gametophyte

Which of the generations is diploid? A: gametophyte B: sporophyte C: both gametophyte and sporophyte D: neither gaemtophyte or sporophyte

If a particular trait had a gene that had a possibility of 9 alleles in the population of a species, which of the following is true regarding this gene? A: The diploid number for the alleles would be 18 for this organism. B: The haploid number for the alleles would be 9 for htis organism. C: The maximum number of alleles for this gene would be 2. D: There is infinite variety in the expression of this trait in one organism.

真核生物基因组的特点( )。 A: 基因组远大于原核生物的基因组，具有多个复制起点，而每个复制子的长度较小 B: 体细胞一般是二倍体(diploid)，即有两份同源的基因组 C: 真核生物一个结构基因转录生成一条mRNA，即mRNA是单顺反子 D: 基本上没有操纵子的结构 E: 许多蛋白是由相同或不同的亚基构成，因此涉及多个基因协调表达的问题