Genética del desarrollo y la conducta / Genetics of development and behaviour
Arch. argent. pediatr
;
108(4): 331-336, ago. 2010. tab
Article
in Portuguese
| LILACS
| ID: lil-558978
RESUMEN
La genética cuantitativa contribuye a discriminar la influencia relativa de los factores genéticos y medioambientales en el desarrollo humano. El cálculo de coeficientes de correlación del cociente intelectual, entre hermanos, o gemelos monocigóticos y dicigóticos, criados juntos o separados, permite efectuar estimaciones de la heredabilidad, que mide la contribución de la genética a la varianza de un rasgo del desarrollo. Muchos aspectos del desarrollo intelectual normal, tienen una heredabilidad de aproximadamente el 50%. El resto es atribuible a factores medioambientales. La influencia de la genética en el desarrollo no implica un destino programado e inexorable, sino una propensión, una tendencia, más queuna certeza.
ABSTRACT
Quantitative genetics can make a significant contribution to disentangle the relative influence of genetics and environment on human developmentand its disorders. Estimates of Pearson'scorrelation coefficients between siblings, mono and dizogotic twins reared together or apart, allows the calculation of heredability, that is,the contribution of genetics to the variance of a given trait. In the case of many aspects of intellectual development, heredability is around50%. The rests is attributable to the influence of environment. The influence of genetics on development should be considered as a trend, a risk, rather than a programmed fate.
Full text:
Available
Index:
LILACS (Americas)
Main subject:
Behavior
/
Multifactorial Inheritance
/
Growth and Development
/
Environment
/
Genetics
/
Intelligence
Limits:
Female
/
Humans
/
Male
Language:
Portuguese
Journal:
Arch. argent. pediatr
Journal subject:
Pediatrics
Year:
2010
Type:
Article
Affiliation country:
Argentina
Institution/Affiliation country:
Hospital Nacional de Pediatría Prof. Dr.Juan P. Garrahan/AR
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