X:A Ration Sex Determination and Turing Pattern
Phenomenon
In Drosophila, the ration of X chromosomes and autosomes determine the gender. When the ration larger than 1, we call it female; when ratio smaller than 0.5, we call it male; otherwise, we call it intersex.
What is the features of these gender?
Worms with an X:A ratio of 1.0 are hermaphrodites, and those with an X:A ratio of 0.5 are males.Animals can discriminate between even smaller differences in the signal: Those with an X:A ratio of 0.67 (2X:3A) are males, whereas those with an X:A ratio of 0.75 (3X:4A) are hermaphrodites. Although the organism uses an “X:A mechanism” of sex determination, wild-type animals are diploid and therefore normally only count X chromosomes.[ref.2]
The haplodiploid sex-determination system in ants, workers of a number of species can lay unfertilised eggs that become fully fertile, haploid males.
Combination between Turing Pattern
Reference
- https://doi.org/10.1093/genetics/iyab197
- https://www.ncbi.nlm.nih.gov/books/NBK20006/?report=reader