The Experts below are selected from a list of 249 Experts worldwide ranked by ideXlab platform
Pierrick Bourrat - One of the best experts on this subject based on the ideXlab platform.
-
From survivors to replicators: evolution by natural selection revisited
Biology & Philosophy, 2014Co-Authors: Pierrick BourratAbstract:For evolution by natural selection to occur it is classically admitted that the three ingredients of variation, difference in fitness and Heredity are necessary and sufficient. In this paper, I show using simple individual-based models, that evolution by natural selection can occur in populations of entities in which neither Heredity nor reproduction are present. Furthermore, I demonstrate by complexifying these models that both reproduction and Heredity are predictable Darwinian products (i.e. complex adaptations) of populations initially lacking these two properties but in which new variation is introduced via mutations. Later on, I show that replicators are not necessary for evolution by natural selection, but rather the ultimate product of such processes of adaptation. Finally, I assess the value of these models in three relevant domains for Darwinian evolution.
Dennis J. Delprato - One of the best experts on this subject based on the ideXlab platform.
-
Heredity × environment or developmental interactions?
Behavioral and Brain Sciences, 1995Co-Authors: Dennis J. DelpratoAbstract:AbstractThis commentary acknowledges the importance of Davey's biocognitive approach to the uneven distribution of fears on the basis of its contribution to a human model for understanding fear. An integrated Heredity-environment and developmental transactional approach based on field/system theory is recommended in place of the mechanistic Heredity × environment interactionism that Davey uses to explain behavioral ontogeny.
Colette Kanellopoulos-langevin - One of the best experts on this subject based on the ideXlab platform.
-
Heredity—Venturing Beyond Genetics
Biology of reproduction, 2008Co-Authors: Marie-christine Maurel, Colette Kanellopoulos-langevinAbstract:Our knowledge of Heredity has recently undergone major upheaval. Heredity transmits considerably more than just genetic elements. First, the oocyte is full of maternal cytoplasmic components that subsequently are present in each new cell. Second, maternal cells can pass to the progeny, where they remain active into adult life (microchimerism). Here, we examine the notion that the transmission of characters involves at least two processes in addition to that of mendelian Heredity, long considered to be the only hereditary mechanism. These processes all involve epigenetic processes, including the transmission of macromolecules, subcellular organelles, and living cells solely from the mother to her offspring, whether female or male, during pregnancy and lactation. We postulate that cytoplasmic Heredity and maternal transmission of cells leading to a long-term state of microchimerism in progeny are two good examples of matrilineal, nonmendelian Heredity. A mother's important contribution to the development and health of her progeny seems to possess many uncharted depths.
-
Heredity -- Venturing Beyond Genetics.
Biology of Reproduction, 2008Co-Authors: Marie-christine Maurel, Colette Kanellopoulos-langevinAbstract:Our knowledge of Heredity has recently undergone major upheaval. Heredity transmits considerably more than just genetic elements: 1) the oocyte is full of maternal cytoplasmic components subsequently present in each new cell 2) maternal cells are able to pass to the progeny, and they remain active into adult life (microchimerism). Here we examine the notion that the transmission of characters involves at least two processes besides that of Mendelian Heredity, long considered to be the only hereditary mechanism. These processes, which all involve epigenetic processes, involve the transmission of macromolecules, subcellular organelles and living cells solely from the mother to her offspring, be they female or male, during pregnancy and lactation. We postulate that cytoplasmic Heredity and maternal transmission of cells leading to a long-term state of microchimerism in progeny are two good examples of matrilineal non-Mendelian Heredity. A mother's important contribution to the development and health of her progeny seems to possess many uncharted depths.
Zhou Cui - One of the best experts on this subject based on the ideXlab platform.
-
Eliminating structure Heredity of 85Cr2Mn2Mo steel by normalizing at high temperature
Materials Science and Technology, 2000Co-Authors: Zhou CuiAbstract:Eliminating the structure Heredity of 85Cr2Mn2Mo steel was investigated on the basis of the study of structure Heredity of the steel. The grain size of austenite may reach to No.8 grade or more by means of normalization at high temperature to make the steel recrystallizce. This precess effectively cuts the structure Heredity of 85Cr2Mn2Mo steel. At the same time, the paper made a good try to the temperature of austenite recrystallization in the steel.
Marie-christine Maurel - One of the best experts on this subject based on the ideXlab platform.
-
Heredity—Venturing Beyond Genetics
Biology of reproduction, 2008Co-Authors: Marie-christine Maurel, Colette Kanellopoulos-langevinAbstract:Our knowledge of Heredity has recently undergone major upheaval. Heredity transmits considerably more than just genetic elements. First, the oocyte is full of maternal cytoplasmic components that subsequently are present in each new cell. Second, maternal cells can pass to the progeny, where they remain active into adult life (microchimerism). Here, we examine the notion that the transmission of characters involves at least two processes in addition to that of mendelian Heredity, long considered to be the only hereditary mechanism. These processes all involve epigenetic processes, including the transmission of macromolecules, subcellular organelles, and living cells solely from the mother to her offspring, whether female or male, during pregnancy and lactation. We postulate that cytoplasmic Heredity and maternal transmission of cells leading to a long-term state of microchimerism in progeny are two good examples of matrilineal, nonmendelian Heredity. A mother's important contribution to the development and health of her progeny seems to possess many uncharted depths.
-
Heredity -- Venturing Beyond Genetics.
Biology of Reproduction, 2008Co-Authors: Marie-christine Maurel, Colette Kanellopoulos-langevinAbstract:Our knowledge of Heredity has recently undergone major upheaval. Heredity transmits considerably more than just genetic elements: 1) the oocyte is full of maternal cytoplasmic components subsequently present in each new cell 2) maternal cells are able to pass to the progeny, and they remain active into adult life (microchimerism). Here we examine the notion that the transmission of characters involves at least two processes besides that of Mendelian Heredity, long considered to be the only hereditary mechanism. These processes, which all involve epigenetic processes, involve the transmission of macromolecules, subcellular organelles and living cells solely from the mother to her offspring, be they female or male, during pregnancy and lactation. We postulate that cytoplasmic Heredity and maternal transmission of cells leading to a long-term state of microchimerism in progeny are two good examples of matrilineal non-Mendelian Heredity. A mother's important contribution to the development and health of her progeny seems to possess many uncharted depths.
