Chapter 3C Vocab Flashcards Preview

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Flashcards in Chapter 3C Vocab Deck (14):
1

behavior genetics

study of the relative power and limits of genetic and environmental influences on behavior

2

environment

every nongenetic influence, from prenatal nurtition, to the people and things around us

3

chromosones

threadlike structures made of DNA molecules that contain the genes

4

DNA

(deoxyribonucleic acid)

a complex molecule containing the genetic infomrmation that makes up the chromosones

5

genes

the biochemical units of heredity that make up the chromosones; segments of DNA capable of synthesizing a protein

6

genome

the complete instructions for making an organism, consisting of all the genetic material in that organism's chromosomes

7

identical twins

twins who develop from a single fertilized egg that splits in two, creating two genetically identical organisms

8

fraternal twins

twins who develop from separate fertilized eggs.  they are genetically no closer than brothers and sisters, but they share a fetal environment

9

heritability

the proporrtion of variation among individuals that we can attribute to genes.  the heritability of a trait may vary, depending on the range of populations and environments studied

10

interaction

the interplay that occurs when the effect of one factor (i.e. environment) depends on another factor (i.e. heredity)

11

molecular genetics

the subfield of biology that studies the molecular structure and function of genes

12

evolutionary psychology

study of the roots of behavior and mental processes using the principles of natural selection

13

natural selection

principle that among the range of inherited trait variations, those contributing to reproduction and survival will most likely be passed on to succeeding generations.

14

mutation

a random error in gene replication that leads to a change