常見(jiàn)例句雙語(yǔ)例句According to the antigenicity and genetic constitution, PCV has two types, one was PCV1 and the other was PCV2.根據(jù)PCV的抗原性和基因組成不同，將其分成兩種不同的基因型即PCV1和PCV2。The endosperm, which is derived from two polar nuclei fusing with one sperm, is a triploid tissue whose genetic constitution is more complex than common diploid tissue.由于胚乳是由雌性的兩個(gè)極核和雄性的一個(gè)精核受精發(fā)育而成的三倍體組織，因此胚乳性狀的遺傳基礎(chǔ)要比通常的二倍體農(nóng)藝性狀復(fù)雜得多。The genetic constitution of sister line and sister species made up the smaller proportion of the total crosses variance, but it had larger differences among the ear characters.盡管姊妹系和姊妹種的遺傳成分在組合表型總方差中所占比例較小，但其在穗部各性狀之間仍存在較大分歧。 返回 genetic constitution