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Allometric models are useful for assessment of aboveground net primary productivity (ANPP) and aboveground biomass (AGB) of forests and shrubs, and are widely implemented in forest inventory and management. Multiple forms of allometric models have been used to estimate vegetation carbon storage for desert shrubland, but their validity for biomass estimation has not been tested at a region.Herbivory is the act of eating plants or plant-like organisms and is a behavior found in herbivores. This lesson defines herbivory, gives examples of some herbivores, and looks at some adaptations.Sex differences in humans have been studied in a variety of fields. In humans, biological sex consists of five factors present at birth: the presence or absence of the SRY gene (an intronless sex-determining gene on the Y chromosome), the type of gonads, the sex hormones, the internal reproductive anatomy (such as the uterus), and the external genitalia.
Pleiotropy refers to the phenomenon of a single gene affecting multiple traits, and as that manifestly ambiguous definition reveals, pleiotropy is a single word with multiple meanings. As biologists in different disciplines turn new genomic techniques toward questions of pleiotropy, the need to carefully discriminate between different meanings of the concept has become imperative.
Author Summary Brains are often compared to computers but, apart from the trivial fact that both process information using a complex physical pattern of connections, it has been unclear whether this is more than just a metaphor. In our work, we rigorously uncover novel quantitative organizational principles that underlie the network organization of the human brain, high performance computer.
The recognition of a tight positive allometric relationship between brain and body size has led to the widespread use of residuals for interspecific comparisons. However, recent evidence suggests that for closely related species (and individuals within a species), absolute brain size is arguably a better predictor of cognitive ability than relative brain size, as the latter introduces errors.
Metric definition, pertaining to the meter or to the metric system. See more.
Pharmacodynamics refers to the relationship between drug concentration at the site of action and the resulting effect, including the time course and intensity of thera-peutic and adverse effects. The effect of a drug present at the site of action is determined by that drug’s binding with a receptor. Receptors may be present on neurons in.
Understanding ontogenetic variation is fundamental for adequate species definition and is the key for recognizing evolutionary relevant processes like heterochrony or developmental constraints. The larval and post-larval shell ontogeny and the ecology of the trigoniide bivalve Myophorella garatei are described in this paper. The species occurs in offshore transition facies of the late.
Students are often tripped up by the difference between quadratic and linear graphs. However, the shapes and equations of these graphs are easy to recognize. The shapes are dictated by the equations that create them. Paying attention to detail will help you recognize the different graph shapes.
The concept of coevolution was first developed by Darwin, who used it to explain how pollinators and food-rewarding flowers involved in specialized mutualisms could, over time, develop long tongues and deep tubes, respectively. He famously predicted that Angraecum sesquipedale, a long-spurred Malagasy orchid, must be pollinated by a hawkmoth with an exceptionally long tongue.
Adaptation is the evolutionary process whereby a population becomes better suited to its habitat. (1) (2) This process takes place over many generations, (3) and is one of the basic phenomena of biology.(4)Also, the term adaptation may refer to a feature which is especially important for an organism's survival. (5) For example, the adaptation of horses' teeth to the grinding of grass, or their.
Adaptation, in biology, the process by which a species becomes fitted to its environment; it is the result of natural selection’s acting upon heritable variation over several generations. Organisms are adapted to their environments in a variety of ways, such as in their structure, physiology, and genetics.
Define growth. growth synonyms, growth pronunciation, growth translation, English dictionary definition of growth. n. 1. a. The process of growing. b. Full development; maturity. 2. Development from a lower or simpler to a higher or more complex form; evolution. 3.
Cognition vs Metacognition Since the study of cognition and metacognition is an interesting topic in a number of disciplines, one can have an interest to find out the difference between cognition and metacognition. However, for most people these two are very confusing.
Negative growth refers to a contraction in business sales or earnings. It is also used to refer to a contraction in a country's economy, as evidenced by a decrease in its gross domestic product.
Organisms are made up of semiautonomous parts or modules, but identifying the limits of modules is not straightforward. Covariation between morphological features across the adults of a clade can identify suites of characters as putative modules. We contrast such an approach for delimiting modules with one that includes inferences of heterochrony, evolutionary change in the timing of.