Ontogeny is an important stage of an individual’s life history, and variation in growth trajectories and juvenile phenotypes has important consequences for a wide range of traits including behavioral traits that subsequently influence fitness, because they directly influence mating success or competitive interactions …

Why do children from orphanages in substandard conditions often experience delays in language development? They have few opportunities for interaction with caregivers while in orphanages. Infants around the world achieve language milestones around the same ages.

Based on the research, do media products created for infants enhance their cognitive functioning? No. Studies have concluded that educational media products have no beneficial effect on infants’ cognitive development.

By studying ontogeny (the development of embryos), scientists can learn about the evolutionary history of organisms. For example, both chick and human embryos go through a stage where they have slits and arches in their necks that are identical to the gill slits and gill arches of fish.

Ontogeny (also ontogenesis) is the origination and development of an organism (both physical and psychological, e.g., moral development), usually from the time of fertilization of the egg to adult. Aspects of ontogeny are morphogenesis, the development of form; tissue growth; and cellular differentiation.

Ontogenetic sequences are a pervasive aspect of development and are used extensively by biologists for intra- and interspecific comparisons. This technique for discovering and formalizing sequences is called the “Ontogenetic Sequence Analysis” (OSA).

1 : the evolutionary history of a kind of organism. 2 : the evolution of a genetically related group of organisms as distinguished from the development of the individual organism. — called also phylogenesis.

Phylogeny, the history of the evolution of a species or group, especially in reference to lines of descent and relationships among broad groups of organisms.

Homologous structures provide evidence for common ancestry, while analogous structures show that similar selective pressures can produce similar adaptations (beneficial features). Similarities and differences among biological molecules (e.g., in the DNA sequence of genes) can be used to determine species’ relatedness.

a similarity between like features of two things, on which a comparison may be based: the analogy between the heart and a pump. an analogous relationship.

Sources of self control include not just parental management but also adverse neighborhood conditions. A composite scale of parent control and warmth are related to self control but the effects of parents monitoring continue to affect self control well into adolescence – stronger at 15 than 13.