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Those unable to do so may use indirect selection or "scanning".
Female extra-pair mating behavior may evolve via indirect selection on males.
MAS is a form of indirect selection.
While this study does shows that this type of indirect selection can result in somewhat maladaptive behavior, it still leaves many questions unanswered.
However, the first markers that allowed indirect selection of a trait of interest were morphological markers.
Molecular markers are useful in indirect selection processes, enabling manual selection of individuals for further propagation.
Fisher explained that, through indirect selection, fitter individuals inherit both the genes and the mating preference for some indicator trait.
Body parts, pointers, adapted mice, or eye tracking can be used to select target symbols directly, and switch access scanning is often used for indirect selection.
In improving yield, indirect selection (the selection of correlated/related traits other than that to be improved) is not necessarily as effective as direct selection.
With direct selection a body part, pointer, adapted mouse, joystick, or eye tracking could be used, whereas switch access scanning is often used for indirect selection.
It calls for indirect selection of a president by a large electoral college; six years ago, it was easily rigged to guarantee the ratification of Mr. Chun as head of state.
Marker assisted selection (MAS) is an indirect selection process where a trait of interest is selected, not based on the trait itself, but on a marker linked to it.
Switch access scanning is an indirect selection technique (or access method), used by an assistive technology user, including those who use augmentative and alternative communication (AAC) to choose items from the selection set.
The researchers found significant genetic correlations between male and female mating attempts and between male and female extrapair copulation rates, indicating that indirect selection probably plays a large role in the females' behavior.
Currently, few breeding programs are directed at organic agriculture and until recently those that did address this sector have generally relied on indirect selection (i.e. selection in conventional environments for traits considered important for organic agriculture).
Fisher's hypothesis of runaway sexual selection suggests that female preference is genetically correlated with male traits and that the preference co-evolves with the evolution of that trait, thus the preference is under indirect selection.
Access methods depend on the abilities of the user, and may include the use of direct selection of symbols on the screen or keyboard with a body part, pointer, adapted mice or joysticks, or indirect selection using switches and scanning.
Since an integrated CTD value can be measured almost instantaneously on scores of plants in a small breeding plot (thus reducing error normally associated with traits measured on individual plants), work has been conducted to evaluate its potential as an indirect selection criterion for genetic gains in yield.