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
. The term can also be used to refer to the study of the entirety of an organism's lifespan.
What is ontogenetic time and ontogenetic events?
Ontogeny begins with the changes in the egg at the time of fertilization and includes
developmental events to the time of birth or hatching
and afterward—growth, remolding of body shape, and development of secondary sexual characteristics. Related Topics: Biological development.
What is meant by ontogenetic?
1 :
of, relating to, or appearing in the course of ontogeny
. 2 : based on visible morphological characters.
What is an example of ontogenetic?
Examples of ontogenetic adaptations are provided from the
prenatal
(e.g., placenta in mammals), infancy (e.g., nursing and rooting reflex; neonatal imitation), and childhood (e.g., overestimation of one's abilities, egocentricity) periods.
What is ontogenetic sequence?
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).
What are ontogenetic factors?
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.
Why is ontogenetic study important?
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 …
What are the stages of ontogenetic development?
Like human beings, the Wistar rats go through the ontogenetic developmental stages «
Prenatal → Birth → Infancy → Childhood → Adolescence → Adulthood → Death
».
What is the basic biogenetic rule?
The biogenetic law states
that each embryo's developmental stage represents an adult form of an evolutionary ancestor
. … The biogenetic law implied that researchers could study evolutionary relationships between taxa by comparing the developmental stages of embryos for organisms from those taxa.
What is ontogeny plant?
Ontogeny refers
to the development of an organism through a series of discrete stages
. For plants, ontogenetic stages include seeds, seedlings, juveniles, mature and senescent individuals. Transition between stages can be difficult to identify, particularly when obvious morphological trait changes do not co-occur.
Are animals pre programmed?
Whereas humans extensively adjust their behaviour based on experience (that is, through the process of learning), the
behaviour of many animal species seems to be automatic
, as if it were pre-programmed. … Behavioral development is a field of study in which there have been intense clashes of opinion.
What is phylogenetic behavior?
PHYLOGENETIC BEHAVIOR
:
Environment-behavior relations that are based on the evolutionary history of a species
are called phylogenetic. The reflex is one instance of phylogenetic behavior. Species history provides the organism with a basic repertoire of responses that interact with environmental conditions.
How does animal behaviour develop?
The development of animal behaviour, therefore, involves many factors. Animals are
subject to a series of permanent and constant changes
, which are the result of continuous interactions between phenotype, genotype and environment, and which will modify and shape the behaviour of individuals.
What is the difference between an ontogenetic and a phylogenetic cause of behavior?
In short, from a single existing organism it evolved into other animals, and phylogeny explains the evolution process. To clear things up,
ontogeny is development
while phylogeny is evolution.
What is phylogeny based on?
Phylogeny is the
representation of the evolutionary history and relationships between groups of organisms
. The results are represented in a phylogenetic tree that provides a visual output of relationships based on shared or divergent physical and genetic characteristics.
What is ontogeny psychology?
n.
the biological origin and development of an individual organism from fertilization of the egg cell until death
. Also called ontogenesis.
