Results 31 to 40 of about 2,212,354 (298)

Is the human species still evolving?: to where?

open access: yesGenetics and Molecular Biology, 2012
The questions of the title have been considered in several ways. First, indications of the traits which make us humans were considered. Then the behavior and culture concepts were examined, and the biology and culture interactions discussed, with an ...
Francisco M. Salzano
doaj   +1 more source

Selection for Growth and Precocity Alters Muscle Metabolism in Nellore Cattle

open access: yesMetabolites, 2020
To clarify the relationship between beef genetic selection for growth and precocity with muscle metabolism and metabolites, we performed metabolomic analysis using Longissimus lumborum (LL) muscle from Nellore cattle with divergent selection for these ...
Nara Regina Brandão Cônsolo   +9 more
doaj   +1 more source

Gene expression programming approach to event selection in high energy physics [PDF]

open access: yes, 2006
Gene Expression Programming is a new evolutionary algorithm that overcomes many limitations of the more established Genetic Algorithms and Genetic Programming. Its first application to high energy physics data analysis is presented.
Teodorescu, L
core   +1 more source

Responses of North American and New Zealand strains of Holstein–Friesian dairy cattle to homeostatic challenges during early and mid-lactation

open access: yesAnimal, 2009
This study investigated the physiological basis of differences in nutrient partitioning between the North American (NA) and New Zealand (NZ) strains of Holstein–Friesian cattle by determining the responses to homeostatic challenges at two stages of ...
J. Patton   +3 more
doaj   +1 more source

Innate immunity in chicken lines developed by EMBRAPA Suínos e Aves: antimicrobial activity of macrophages and serum

open access: yesRevista Brasileira de Zootecnia, 2021
The objective of this study was to compare the antimicrobial activity of macrophages and serum in laying hen (MM, CC, and CCc) and broiler chicken lineages (TT and LL). Macrophages were evaluated for phagocytic and antimicrobial activity.
Miriele Caroline da Silva   +6 more
doaj   +1 more source

Genome-Wide Footprints of Pig Domestication and Selection Revealed through Massive Parallel Sequencing of Pooled DNA [PDF]

open access: yes, 2011
Background Artificial selection has caused rapid evolution in domesticated species. The identification of selection footprints across domesticated genomes can contribute to uncover the genetic basis of phenotypic diversity.
Amaral, A.J.   +8 more
core   +2 more sources

GENETIC EQUILIBRIUM AND SELECTION [PDF]

open access: yesGenetics, 1929
Page 93, formula 10, for "4 R " read "4 T ." Page 97, line 5 from bottom, for "productivity" read "productively." Page 103, last line of figures, for "(T+S1/2)2" read "(T+S/2)2." Page 107, table column headed F2, (see PDF) Page 120, lines 11 and 12, for "such equilibrium" read "such ...
openaire   +3 more sources

Genetic Selection and Conservation of Genetic Diversity* [PDF]

open access: yesReproduction in Domestic Animals, 2012
ContentsFor 100s of years, livestock producers have employed various types of selection to alter livestock populations. Current selection strategies are little different, except our technologies for selection have become more powerful. Genetic resources at the breed level have been in and out of favour over time.
openaire   +2 more sources

Sire effect on early and late embryonic death in French Holstein cattle

open access: yesAnimal, 2015
We investigated the effect of maternal sire on early pregnancy failure (between D0, day of insemination and D90) in their progeny during the first and second lactations (n=3508) in the Holstein breed.
D. Ledoux   +7 more
doaj   +1 more source

Experimental harvesting of fish populations drives genetically based shifts in body size and maturation [PDF]

open access: yes, 2013
Size-selective harvesting in commercial fisheries can induce rapid changes in biological traits. While experimental and wild harvested populations often exhibit clear shifts in body size and maturation associated with fishing pressure, the relative ...
Christine Dreyer   +9 more
core   +1 more source

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