Botany online 1996-2004. No further update, only historical document of botanical science!

The influence of the ratio of sex chromosomes to autosomes
in Melandrium album and Drosophila melanogaster
(M. WESTERGAARD, 1953)
Number of Combination Karyotype Melandrium Drosophila
1
2 A + XX
female
female
2
2 A + XXX
female
superfamale
3
3 A + X
?
male / sterile
4.
3 A + XX
female
hermaphrodite
5
3 A + XXX
female
female
6
4 A + XX
female
male
7
4 A + XXX
female
hermaphrodite
8
4 A + XXXX
female
female
9
4 A + XXXXX
female
?
10
2 A + XY
male
male
11
2 A + XYY
male
male
12
2 A + XXY
male
female
13
2 A + XXYY
?
female
14
3 A + XY
male
supermale
15
3 A + XXY
male
hermaphrodite
16
3 A + XXXY
male
female
17
4 A + XY
male
?
18
4 A + XXY
male
?
19
4 A + XXYY
male
?
20
4 A + XXXY
male
?
21
4 A + XXXYY
male
?
22
4 A + XXXXY
hermaphrodite
?
23
4 A + XXXXYY
male
?


© Peter v. Sengbusch - Impressum