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Definition
| threadlike structures made of DNA molecules that contain genes |
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Term
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Definition
| twins who develop from a single fertilized egg that splits in two, creating two genetically identical organisms |
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Term
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Definition
| twins who develop from separate fertilized eggs; they are genetically no closer than brothers and sisters, but they share a fetal environment |
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Term
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Definition
| a person's characteristic emotional reactivity and intensity |
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Term
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Definition
| biologically and socially influenced characteristics by which people define male and female |
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Term
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Definition
| behaviors, ideas, attitudes, and traditions shared by a large group of people and transmitted from one generation to the next |
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Definition
| thinking of one's own goals before group's goal and defining one's identity in terms of personal attributes rather than group identifications |
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Definition
| thinking of the group's goals before one's own personal goals |
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Term
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Definition
| the sex chromosome found in both male and female; males have one while females have two |
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Term
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Definition
| sex chromosomes found only in males |
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