The phrase "a key model for" is correct and usable in written English.
It can be used when referring to an important or influential example that serves as a standard or guide in a particular context.
Example: "The research conducted by Smith et al. serves as a key model for understanding the effects of climate change on biodiversity."
Alternatives: "an essential framework for" or "a significant example of".
Thus the chick provides us with a key model for understanding the development of early embryos for all vertebrates, including humans.
A key model for examining the activity-dependent development of primary visual cortex (V1) involves the imbalance in activity between the two eyes induced by monocular deprivation (MD).
Sheila's work in Oxfordshire became a key model for the 1978 Warnock report on integrating disabled children into mainstream schools, although unlike many post-Warnock attempts, Sheila integrated the children only as much as they and the host schools could happily manage.
When it comes to American mythology, Brown was a key model for The Candidate, the 1972 New Hollywood classic about the maverick son of a famous former California governor who runs for the U.S. Senate.
It turned out that the Soviets, reacting to the massive U.S. advantage in long-range bombers built up under Air Force General Curtis "Bombs Away" LeMay -- a key model for Sterling Hayden's character in Dr. Strangelove -- in his Strategic Air Command, briefly stole on a march on the U.S. in the early and mid-'50s in long-range missiles.
Among vertebrates, birds have been a key model for investigating effects of environmental conditions during early development [1] [6].
The three-dimensional structure of the pilus generated from TEM images fitted with high resolution crystal structure of the major fragment of RrgB have provided a detailed molecular view of the backbone of S. pneumoniae pilus, and could be a key-model for the study of the assembly, attachment and function of the pili in Gram-positive bacteria.
Due to indisputable advantages such as a short and well-known life cycle, well-characterized developmental genetics, and a wide range of molecular tools for gene manipulation, Drosophila melanogaster has played the primary role among insects and has traditionally represented a key model system for studies on autophagy (for a complete review see [ 3]).
Deinococcus radiodurans, which can absorb IR doses in excess of 5 kGy without lethality (over 1000 times the lethal dose for humans), has become a key model organism for understanding this phenotype (Cox and Battista, 2005, Blasius et al., 2008).
The fruit fly Drosophila melanogaster is a key model organism for discovery of evolutionarily conserved biological mechanisms, which include the control of nutrient sensing [1], [2], feeding [3] [5] and ageing [6], [7].
Tarantula skeletal muscle has emerged as a key model system for understanding the structural characteristics of muscle thick filaments.
