Over Many Generations Man Has Chosen Certain Desirable Characteristics in Dogs

question 9

Multiple Choice

Over many generations man has chosen certain desirable characteristics in dogs by allowing dogs possessing those characteristics to reproduce. In this way, 150 breeds of dogs, all in the same species, have descended from wolves. This process is referred to as

• A) natural selection.
• B) inheritance of acquired traits.
• C) artificial selection.
• D) convergent evolution.

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Definitions:

Defense Mechanisms

Psychological strategies used unconsciously by individuals to protect themselves from anxiety and to manage emotional conflict and external stressors.

Lymph Tissue

A vital part of the immune system, made up of organs and cells that produce, store, and carry cells that fight infection.

Preoperational

Referring to Piaget's stage of cognitive development in children aged 2-7, characterized by symbolic thinking and difficulty understanding others' perspectives.

Secondary Circular Reaction

A stage in Piaget's theory of cognitive development where infants (4-8 months) repeat actions to get desired outcomes, showing the beginning of intentional behavior.