Although reports of these consequences in CAD deficient plants are scarce, these traits must be critically evaluated when developing new commercial cultivars targeted for bioenergy.
From a practical perspective, genomic random regression models can be used to predict genomic breeding values for scarce phenotypes (e.g., novel traits) traits measured in extreme environments, or traits measured late in life, such as longevity.
Genetic variation and diversity studies for the aforementioned traits are scarce for upland and lowland rice.
Data from the literature on NAMPT genotypes and CAD-related traits are scarce.
Data on the relationship between male pubertal timing and adult metabolic traits are scarce.
However, knowledge about the genetic background of health traits is scarce due to a lack of systematic health recording of normal horse populations.
While additive genetic variance of fitness has been studied in a few populations of birds and mammals [ 22, 26, 39, 40] data on the genetic architecture of fitness or fitness related traits are scarce [ 41- 44].
In the case of Daphnia, studies identifying genes that account for adaptive traits are scarce, and are based on qPCR analyses of candidate genes which were identified on the basis of a-priori knowledge of their function [ 35, 36].
Although male development and maintenance of pre-copulatory male sexually selected traits other than body size or mass are costly (i.e. [ 21]), and can potentially covary with the expression of ejaculate characteristics (i.e. [ 22]), inter-specific studies involving male armaments or ornamental traits remain scarce.
Overall, if we except species with a clear dispersal-dedicated apparatus [ 24, 45, 47, 58], evidence for genetic variation in dispersal syndromes and close dissections of trait associations are scarce (for a few exceptions [ 39, 41, 44], see also [ 38]).
Data on the evolutionary impact of learned traits are "very scarce and badly needed," he says.
