In the
Lygaeus
(XX/XY) mode of sex determination the
heterogametic
sex (the male in this example) is XY and produces
different
gametes with either an X or a Y chromosome
Females are
homogametic
(XX).
The offspring sex ratio is 1:1.
In the Lygaeus
(XX/XY) mode of sex determination the heterogametic sex (the male in this example)
is XY and produces different gametes with either an X or a Y chromosome