Nature versus Nurture Flashcards
Human development is viewed by most developmental psychologists as being due to …
a combination of genetic and environmental factors.
The current nature-nurture debate focuses on …
the relative contributions of these factors and how they interact to produce behavior.
As an example of the current view of the nature-nurture debate, some experts point out that the relative importance of heredity and the environment …
differs at various points of the life span.
What is an example of the relative importance of heredity and the environment differing at various points in the lifespan?
genetic factors are most critical during the early stages of development and environmental factors predominate during later stages.
As a consequence of behavior becoming less a consequence of heredity and more the result of a wide range of environmental influences as people age, …
people become more diverse as they age.
Regarding the role of heredity, most traits are …
polygenic.
Polygenic means that the traits are …
influenced by multiple genes.
Examples of polygenic traits are …
height, weight, intelligence, and personality.
Other characteristics are the result of …
a single pair of genes that contains either a dominant gene or two recessive genes.
Homozygous means that a child has …
inherited a gene from both parents.
Heterozygous means that a child has …
inherited a gene from only one parent.
When a trait is due to a dominant gene, a child who is either homozygous or heterozygous …
will exhibit that trait.
Examples of physical traits that require only a single dominant gene include …
brown eyes, dark hair, and farsightedness.
When a trait is due to a recessive gene, …
a child must by homozyous with regard to that gene in order to display the trait.
Traits resulting from a pair of recessive genes include …
green, hazel, and blue eyes, blond hair, and nearsightedness.
