1. 2. 3.

1881D. KostoffD. melanogaster salivary gland chromosomeEHeitzHBauer1933TSParnter1933

1.5um400um100150

2. 10004000(polytene chromosome)

2.

3.4.PuffPuff

1. 2. 3. 1mol/L

1.

2. 1Imol/L HCl12min 3. HCl 4. 130min 5.

1. 2.3.HCl 4.

1. 2.