chromosome doubling的用法和樣例：
例句
- Haploid breeding is a method of doubling the spontaneous or artifical haploid with colchicum, and selecting the super doubled lines.
單倍體育種是利用自然發生或人工培育的單倍體，經染色體加倍獲得純合二倍體，再從中選育自交系的方法。 - Either of the two daughter strands of a duplicated chromosome that are joined by a single centromere and separate during cell division to become individual chromosomes.
染色單體染色體複製產生的兩個單體中的一個，由細胞分裂過程中染色體在一個著絲點上分裂形成單個染色體。
