Results 31 to 40 of about 1,829,546 (357)

Direct selection on male attractiveness and female preference fails to produce a response

open access: yesBMC Evolutionary Biology, 2004
Background Theoretical studies suggest that direct and indirect selection have the potential to cause substantial evolutionary change in female mate choice.
Brooks Robert   +2 more
doaj   +1 more source

Genetic association between somatic cell score and milk lactose in early- to mid-lactation of first calving Fleckvieh cows [PDF]

open access: yesJournal of Central European Agriculture, 2018
The present study aimed to assess genetic correlations of milk lactose (percentage and yield), lactose to fat ratio and lactose to protein ratio with somatic cell score (SCS) in the first half of lactation, the period with the highest risk of mastitis in
Angela Costa   +5 more
doaj   +1 more source

Genetic analysis of cortical thickness and fractional anisotropy of water diffusion in the brain [PDF]

open access: yes, 2011
Objectives: The thickness of the brain’s cortical gray matter (GM) and the fractional anisotropy (FA) of the cerebral white matter (WM) each follow an inverted U-shape trajectory with age. The two measures are positively correlated and may be modulated
Anderson eWinkler   +18 more
core   +4 more sources

The estimation of genetic parameters for growth curve traits in Raeini Cashmere goat described by Gompertz model [PDF]

open access: yes, 2018
The objectives of this study were to describe growth curve of Raeini Cashmere goat applying the Gompertz growth model and genetic evaluation of growth curve-related traits including model parameters of A, B and K, inflection age (IA) and inflection ...
Ghiasi, Heydar   +2 more
core   +1 more source

GENETIC COVARIANCE OF FITNESS CORRELATES: WHAT GENETIC CORRELATIONS ARE MADE OF AND WHY IT MATTERS [PDF]

open access: yesEvolution, 1991
The genetic variance-covariance matrix, G, is determined in part by functional architecture, the pathways by which variation in genotype influences phenotype. I develop a simple architectural model for G for two traits under directional selection constrained by their dependence on a common limiting resource. I assume that genetic variance is maintained
openaire   +3 more sources

Genetic and non-genetic correlates of vitamins K and D [PDF]

open access: yesEuropean Journal of Clinical Nutrition, 2007
To assess the genetic and nongenetic correlates of circulating measures of vitamins K and D status in a community-based sample of men and women.A cross-sectional study of 1762 participants of the Framingham Offspring Study (919 women; mean age 59 years).
Bess Dawson-Hughes   +10 more
openaire   +2 more sources

Identifying progressive imaging genetic patterns via multi-task sparse canonical correlation analysis: a longitudinal study of the ADNI cohort [PDF]

open access: yes, 2019
Motivation Identifying the genetic basis of the brain structure, function and disorder by using the imaging quantitative traits (QTs) as endophenotypes is an important task in brain science.
Du, Lei   +7 more
core   +1 more source

Genetic variation and quantitative trait loci associated with developmental stability and the environmental correlation between traits in maize [PDF]

open access: yes, 2008
There is limited experimental information about the genetic basis of micro-environmental variance (V-E) (developmental stability) and environmental correlations.
Hill, William G.   +2 more
core   +1 more source

Estimation of Genetic Parameters for Peak Yield, Yield and Persistency Traits in Murciano-Granadina Goats Using Multi-Traits Models [PDF]

open access: yes, 2019
This paper studies parameters of a lactation curve such as peak yield (PY) and persistency (P), which do not conform to the usual selection criteria in the Murciano-Granadina (MG) breed, but are considered to be an alternative to benefit animal welfare ...
Barba Capote, C.J.   +5 more
core   +1 more source

Environmental stress alters genetic regulation of novelty seeking in vervet monkeys. [PDF]

open access: yes, 2011
Considerable attention has been paid to identifying genetic influences and gene-environment interactions that increase vulnerability to environmental stressors, with promising but inconsistent results.
Bailey, JN   +5 more
core   +1 more source

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