Another classic fish model for studying genetic sex determination is the medaka Oryzias latipes.
His unflinching determination to take the time he needed to reach a considered decision marked him out as an unusual talent and in the process he upgraded the standing of referees within the game.
I would not be here today if it had not been for their sheer determination to find me.
Chromosomal sex determination can also be more complex, with multiple X and Y chromosomes, or maternal, as in the carrion fly Chrysomya rufifacies.
Since he was elected president of the Russian Federation, he has often publicly assured journalists of his determination to respect their independence.
There is no acceptance of the place of performance assessment within career structures for teachers and in the accepted processes for the determination of rewards.
There is also something admirable about the slow pace of change in the U.S. quality media and their determination to hang onto the tried and tested formulas.
In mammals, male sex determination is triggered by a primary signal, encoded by the testis determining factor SRY, localized on the Y chromosome.
genetic sex determination
Biologist Jack Frazier pointed out that the temperature around the eggs during the incubation is critical in sex determination .