Developmental Plasticity and the Origin of Tetrapods

Flashcards covering key concepts from the lecture notes on developmental plasticity and the origins of tetrapods, with a focus on Polypterus and its evolutionary significance.

Developmental Plasticity

The ability of an organism to adapt its morphology, behaviour, physiology, and biochemistry in response to environmental changes.

Tetrapods

A group of vertebrates that includes amphibians, reptiles, birds, and mammals characterized by having four limbs.

Polypterus

A genus of fish that is regarded as an extant analogue of stem tetrapods, showcasing primitive characteristics of vertebrate evolution.

Pectoral Girdle

The set of bones that supports the pectoral fins in fish and forelimbs in tetrapods, crucial for locomotion and feeding.

Phenotypic Plasticity

The capacity of an organism to change its phenotype in response to environmental conditions, often contributing to survival and adaptation.

Evolutionary Change

The process by which species undergo modifications over generations, encompassing both microevolutionary (small changes) and macroevolutionary (larger scale changes) phenomena.

Kinematics

The branch of mechanics that describes the motion of points, bodies, and systems without considering the forces that cause the motion.

Morphology

The study of the form and structure of organisms, including their external and internal structures.

Heritable Material

Genetic information that can be passed from parent to offspring, which may include traits acquired through phenotypic plasticity.

Effective Locomotion

The efficiency and capability of an organism to move effectively in its environment, influenced by anatomical and biomechanical adaptations.