The other half of the sons will survive, but will not transmit the lethal factor.
The lethal factor is the one which Darwin himself most emphasized.
This result is due to a lethal factor, lethal 5, which appeared in this culture for the first time.
Selection by death may result either from inadequate food supply, or from some other lethal factor.
It is interesting in that the males which receive the lethal factor sometimes live long enough to hatch.
lethal factor n.
A gene mutation or chromosomal structural change that when expressed causes death before sexual maturity.
lethal gene n.
A gene whose expression results in the death of the organism.