Additional data for the study of sex-linked inheritance in Drosophila

✍ Scribed by Morgan, T. H. ;Cattell, Eleth

• Publisher: John Wiley and Sons
• Year: 1913
• Tongue: English
• Weight: 334 KB
• Volume: 14
• Category: Article
• ISSN: 0022-104X
• DOI: 10.1002/jez.1400140103

✦ Synopsis

In a paper dealing with Data for the Study of Sex-linked Inheritance in Drosophila (Jour. Exp. Zool., vol. 13, no. 1, 1912) we described seven crosses in which three pairs of the sex-linked factors were involved. Three crosses that belonged to the same series were withdrawn because, as stated, the results were anomalous in certain points. It seemed almost certain that an error had crept in somewhere. The new results show, in fact, that these crosses are consistent with the other results concerning eye color, body color and wing characters. The new data, added to those of our former paper, to those of Morgan's paper for 1911, and to those of Dexter's paper that has just appeared, give numbers large enough to show the 'coupling strength' of some of the factors involved.

THE HEREDITY OF THREE CONTRASTED SEX-LINKED CHARACTERS

In the former paper (page 89) the second, third, and fourth combinations were the ones omitted. They are given here in sequence. The same symbols are used and the same method employed in writing out the analyses that were used before.

Short, red, black by long, white, yellow

This is the reciprocal of the cross already published (1912, page 90). When the female, LWY is mated to the male SRB all the female offspring are long, red, gray and all themales long, white, yellow. The numerical results for this and the Fz generation are as follows: 33