Data on interchanges

Chromosome 1:

• Near P 1-2b, 1-9c.
• Between P and br 1-3a, 1-5b, 1-9a, 1-10b.
• Near br 1-3d, 1-7b, 1-7c, 1-9b, 1-10a
• Between br and bm₂ 1-7d. 1-4 and 1-5a about 10 to 20 units from br but order uncertain.

Chromosome 3:

• Between a and nana 3-5c, 1-3b and probably 3-9b.
• Near na 3-5b.
• Nearer ts₄ 1-3a, 2-3c, 3-7b, 3-8, 3-9a, 3-10a.

Chromosome 4:

• Near su 1-4, 2-4c, 4-6a, 4-6b, 4-6c, 4-8, 4-9a, 4-1Oa, 4-10b, 4-5d.
• Between su and Tu 2-4b.
• Near Tu 2-4d.

Chromosome 5:

• Between pr and bm1 2-5b, 4-5d.
• Close to bm₁ 1-5b, 1-5c.

Chromosome 6:

• In Y-Pl neighborhood with much suppression of crossing over 2-6d, 3-6a, 4-6a, 4-6b, 6-8, 6-9b.
• Near pigmy 6-10 (probably sm-T-py).

Chromosome 7:

• Near ra 1-7b, 2-7b, 2-7c, 3-7a, 3-7b.
• Distant from ra 2-7a

Chromosome 8:

• Near jap 8-10c, 3-8a.
• 15 to 25 units from jap 5-8, 6-8, 8-10a.
• Far from jap 3-8b, 4-8, 8-10b, 8-10d.

Chromosome 9:

• All tested are in long arm beyond wx.
• Less than 10 units from wx 3-9a, 6-9b, 4-9a.
• 10 to 15 units from wx 6-9a, 1-9a.
• About 40 units from wx 1-9b.

Chromosome 10:

• Left of R 9-10.
• Near g 4-10b, 3-10c.
• 10 to 20 units beyond g 6-10, 8-10b, 1-10a, 8-10c, 3-10b.
• 20 to 30 units beyond g 3-10a, 8-10a.

Of the interchanges recorded in my list in Genetics (January, 1935 issue) all but 8 I believe have been obtained in homozygous condition.