Finally, traits such as sperm morphology seem to be under strong genetic control, since high levels of inbreeding cause an increase in sperm abnormalities [20], [64].
Together with the morphological details of other Myxidium spp. of frogs (Table S3), our data suggest that the myxospores of divergent amphibian Myxidium species have maintained similar structural characteristics and that this shared morphology represents an optimal phenotype that is under strong stabilising selection pressure [33].
Leaf morphology varies extensively among plant species and is under strong genetic control.
Crucially, exposure to auxin over the effective concentration range had no detectable effects on worm viability, morphology or fertility, nor did expression of TIR1 under strong drivers in the soma or germ line (Table 1, Tables S1-S3).
Sperm morphology predicted paternity instead, thus sperm quality traits are under strong sexual selection, presumably driven by the high risk of sperm competition under natural conditions.
Ear morphology is included in breed standards and has clearly been under strong artificial selection for these various divergent types.
However, phenotypes that we predict to have historically been under strong selection include horned-polled, coat colour, stature, ear morphology, and behaviour.
In terms of call morphology, however, the default assumption has always been that nonhuman primate calls develop under strong genetic influences [ 5] with little or no voluntarily control [ 6].
Under polarized light microscopy, they have a needle-like morphology and strong negative birefringence.
One can go under strong furniture.
