Hmm, you mean continuously varying traits, just like mutation, except two to three orders of magnitude greater?
You have got to be trolling at this point, or maybe a very patient Poe?
I do this for the readers, as I know that the Dunning-Kruger Effect rules your world -
continuous variation
See more synonyms on Thesaurus.com
noun Biology.
- variation in phenotypic traits such as body weight or height in which a series of types are distributed on a continuum rather than grouped into discrete categories.
How that is 'like mutation' is a mystery, known only to the feeble of mind, tunneled of vision, desperate of motivation.
AMER. ZOOL., 21:795-811 (1981)
Population Variation in Continuously Varying Traits
as an Ecological Genetics Problem
P. R. GRANT AND T. D. PRICE
SYNOPSIS. The niche variation hypothesis is an adaptive explanation for variation within populations and for the differences in variation between populations in morphological, physiological or behavioral traits. It has received only partial support from empirical tests and has been criticized on theoretical grounds.
Recent quantitative genetic models have made an advance by exploring the effects of mutation, migration, mating pattern and selection on phenotypic variance. These models are reviewed and their most important features are integrated in a new model. In this model population variation is in a state of balance between the opposing forces of mutation and immigration, which tend to elevate variation, and selection and possibly genetic drift tending to decrease it. Populations exhibiting different levels of variation are interpereted as having different equilibrium points, and it is the task of empirical studies to determine the relative magnitudes of the opposing factors. An example is given from studies of Darwin's finches.
Geospiza fortis varies more than G. scandens on Isla Daphne Major, Galapagos, in several morphological traits including beak and body size. This is explained, assuming equal mutation rates in the two species, as the result of more frequent genetic input to the G. fortis population, through occasional hybridization with immigrant G. fuliginosa, and relaxed stabilizmg selection. Stabilizing selection is less intense on
G. fortis than on
G. scandens because the
G. fortis population has a broader niche; there is both a within-phenotype and between phenotype component to the broad niche of
G. fortis. The success of theory in explaining population variation is discussed, and it is concluded that empirical studies lag far behind theory.
And from the introduction:
"In this paper we will review the major
explanations for the maintenance of
continuous
variation and for the fact that populations
differ in variation for a given trait.
Since
we will be concerned solely with continuous
variation we will ignore sexual dimorphism,
a special type of population variation that may have relevance to our primary question..."
So to sum up -
These are NOT NOT NOT "NEW" traits, as you seem to have to believe. The introduction of alleles from one species into the hybrid group alter already-existing traits, it does NOT introduce new ones (in this study).
Get it NOW?