Concept explainers
To explain:
The reason behind the difficulty in identifying an individual gene that governs a particular behavior.
Concept introduction:
The term traits can be defined as the characteristics or the conditions, which are genetically determined. Most often, the traits are physical; however, they may be behavioral as well. There are certain traits, which are determined by one gene or more genes as well as the environment. Such kinds of traits which are cumulatively affected by the genes and environment are known as the multifactorial traits.
Explanation of Solution
The particular behavioral characteristics are not mediated by one factor; rather it is a cumulative effect of multiple factors such as hormones and neuron. This makes it possible to predict an individual gene behind the behavioral factor. There are certain traits which are coded by multiple genes. These genes are most often influenced by the environment. So, the same genes will have different effects in different environment.
Usually, the behavior is not coded by individual gene. The effect of gene is influenced by neurons and hormones. There are certain features which are coded by more than one gene and this condition is known as polygenic traits. These traits are also influenced by environmental factors. So, it is difficult to trace a single gene for each behavioral characteristic.
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