Site pages
Current course
Participants
General
Topic 1
Topic 2
Topic 3
Topic 4
Topic 5
Topic 6
Topic 7
Topic 8
Topic 9
Topic 10
Topic 11
Topic 12
Topic 13
Topic 14
Topic 15
Topic 16
Topic 17
Topic 18
Topic 19
Topic 20
Topic 21
Topic 22
3.1.13. Sex chromosomes
The most common system of sex determination in fish as in other vertebrates is known as the XY system. The individuals that are homogametic (XX) are female, while heterogametic (XY) individuals are males. In the second system, the male is homogametic (ZZ) and the female is heterogametic (WZ). This system is known as the WZ system. |
Last modified: Monday, 2 January 2012, 4:56 AM