Psychology Frontiers And Applications Study Set 5

In a true act of altruism, the helping individual gains a personal advantage.

The greatest similarity in intelligence scores for different family relations is between mothers and their firstborn children.

According to the theory of reciprocal altruism, we help those that share their genes with us.

Personality traits such as extraversion and emotional stability were helpful in attaining dominance.

A heritability coefficient of 0.70 for math ability indicates that 70% of the variation in math ability between individuals is due to genetic factors.

In humans, each cell has 23 chromosomes.

The gene knockout procedure involves using certain enzymes to cut DNA into molecules to combine them with the DNA of another organism.

In examining the factors that influence personality traits, the role of genetic similarity has been shown to be equally important compared to the role of the family environment.

Some research has shown that identical twins raised apart are still more similar than fraternal twins raised together.

Both males and females rate mutual attraction as one of the top qualities they seek in a mate.

Twins, whether identical or fraternal, tend to be treated very similarly by others.

The concept of a reaction range emphasizes the fact that genetic and environmental factors interact to influence behaviour.

Genetic variation enables some individuals to adapt to their environment, thus ensuring their survival.

Both males and females rate physical attractiveness as the top quality they seek in a mate.

Evolutionary theorists argue that we find symmetrical faces to be most attractive because it is an indication of good health.

Genotypes are present from conception, but phenotypes can be affected by the environment.

Polyandry occurs in a species if the male is low in parental investment and the female is high.

Sometimes, as part of the natural selection process, characteristics called "neutral" variations that neither enhance nor hinder survival are passed on.

If a gene is recessive, the particular characteristic will show up if at least one partner carried it.

Dizygotic twins share the same amount of genetic material as do regular siblings.