Question

Studying close relatives allows behavioral geneticists to determine ________.

Answer 1

Studying close relatives allows behavioral geneticists to determine the effect of genes on the environment and population

Further explanation

Differences between individuals occur because of differences in genetic factors.

The properties possessed by each individual can be passed on to their descendants including gender, disorders/disease, or blood type

These gene differences contribute to the growth of the human population

The population influences the carrying capacity of the environment.

Carrying capacity of the environment is the ability of the environment to provide the resources it has for the life of creatures within normal limits. The resources produced or available are very limited, so if the population exceeds the limit, environmental problems will occur. These problems include the scarcity of natural resources, the emergence of pollution or the occurrence of competition in fighting over existing natural resources.

So that efforts to control or manage the environment such as greening, processing industrial waste or recycle principles.

The study of human behavior based on the nature of genes will be useful to reduce environmental exploitation that affects the human population as a whole.

The population of quality and productive human resources will have a positive impact on the environment

So studying close relatives allows behavioral geneticists to determine the effect of humans from the nature of their genes on the carrying capacity of the environment and their effect on living populations

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Keywords: genes, environment, population

Answer 2

It helps in determining the contributions of genes and environment in a population.

Further Explanation:  

Behavioural genetics is the scientific research of using genetic methods to search the nature and individual differences in human behaviour. It was founded by Francis Galton in 19 century. It focuses on genetic influences. It is associated with the eugenics movement during the World War- II. It is researched on the inheritance of behaviour and also of mental illness in humans. Environmental influences also play a larger role. The two famous proponents of this theory are Plato and Aristotle. Galton published his work in Hereditary Genius. The study focused to initiate a debate on the role of relatives in gene and that of the environment on the behavioural characteristics. Galton introduced multivariate analysis. The main idea behind the eugenics to use selective breeding that combined the knowledge with the inheritance of human behaviour to improve the Homo sapiens. But the eugenics movement disturbed by the corruption and genocidal actions by the Nazis in Germany. The study of behaviour genetics started after publication of the book name “behaviour genetics" by John L fuller. This field has grown in a diverse manner touching other scientific disciplines. The other different approaches to study are twin and family studies, quasi-experimental designs.

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Answer Details:

Grade: High School

Subject: Social Science

Chapter: Behavioral Genetics

Keywords: Genetic methods, individual differences, human behaviour, Francis Galton, 19 century, mental illness, Hereditary Genius, multivariate analysis, selective breeding, quasi-experimental designs.