chromatid

1.At anaphase the dicentric chromatid will form a bridge and the acentric a fragment, both of which can be scored.

在后期双着点色将形成个桥，无着点色单形成断片，此两者均可记录下来。

2.At this point esch chromosome consist of a pair of chromatids and the two associated chromosomes are termed a tetrad.

此时每条色对色单构成，这两条联合的色称为四分。

3.Human Peripheral blood exposed with tritiated water at variousdoses for 54 hr was examined to observe the chromosome and chromatid abe-rrations at metaphases in the first mitosis of lymphocytes.

将人外周血在不同剂量的氚水中培养54小时,观察到淋巴细胞第次有丝分裂中期的色型及单型畸变。