Behavioral Genetics You are a marine biologist raising a captive colony of a spe

Question

Behavioral Genetics

You are a marine biologist raising a captive colony of a species of squid (Calamari deliciosi frittata). These squid reproduce readily in captivity, and do so quickly: females lay clutches of 50 eggs on average, and it takes only 3 weeks for offspring to reach reproductive age. The squid are marked for individual recognition with numbered tags. When you enter the laboratory where the squid tank is held, you note that some of the individuals consistently flee to the far side of the tank, while others approach you. You become interested in exploring the genetic basis of the behavioral differences you observe.

3A) Develop a set of hypotheses and predictions for the genetic basis of the behavioral differences you observed. Your hypotheses should match with the behavioral data you collected. Think about the kind of behavioral differences you observed, and the kind of genetic mechanisms you would expect to control those differences.

3B) Design a study that would test your behavioral genetic hypotheses. You can assume that both male and female squid are found in both behavioral groups

Explanation / Answer

Behavioral Genetics:. Behavior Genetics has shown that all personality traits have both biological and environmental bases. One such trait is intelligence.

Genes versus environment: Behavior Genetics is a field in which variation among individuals is separated into genetic verses environmental components.

Environmental influence can be divided into two classes shared and non shared environment. Shared environment is the environment shared by siblings reared in the same family. This include such variables as socioeconomic status and parent education. Non shared environment is a enbienviron unique to the indivifuai. This includes such variables as peer group

It is important to note that there is no single gene for intelligence, perdiperson traits, behavior, or even height. Rather such complex characteristic's are polygenic they are influenced by multiple genes.only the relative influence of all genes as opposed to environment.

Children shared 50 percent of their genes with each parent. Therefore got genes to be influential whatsover the traits in question must be run in families. A trait could be environmentally transmitted rather than inherited.

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