Flashcards in 3C1 Deck (29):
Every nongenetic influence from prenatal nutrition to the people and things around us
Threadlike structured made of DNA molecules that contain the genes
A complex molecule containing the genetic information that makes up the chromosomes
The biochemical units of hereditary that make up the chromosomes; segments of DNA capable of synthesizing a protein
The complete instructions for making an organism, consisting of all the genetic material in that organism's chromosomes
A small difference in DNA...
Goes a long way
Our genetic traits help explain....
Our shared human nature and our human diversity
Twins who develop from a single fertilized egg that spits into two, creating two genetically identical organisms
Twins share the same genes....
But don't have the same number of copies
One twin's placenta may.....
supply better nourishment than the other
Twins who develop from separate fertilized eggs. They are genetically no closer that brothers and sisters, but the share a fetal environment
Identical twins are more similar...
Than fraternal twins in outgoingness and emotional instability
Separated twins live...
Same age, biologically unrelated siblings
Biological parents and siblings
Adoptees are more like their....
Biological parents than their adopted ones
The proportion of variation amount individuals that we can attribute to genes. The heritability of a trait may vary, depending in the range of populations and environments studied
If everything is equal and healthy...
Then heritability would increase
If all people had similar heredities. But were raised in different environments...
Heredity would be lower
Putting people in new social context....
Can change aggressiveness
Genes and environment- nature and nurture-
Work together like two hands clapping
The interplay that occurs when the effect of one factor (such as environment) depends on another factor (such as heredity)
The subfield of biology that studies the molecular structure and function of genes
Molecular behavior genetics
To find some of the many genes that influence normal human traits such as body weight, sexual orientation, and Extraversion, and also to explore the mechanisms that control gene expression
Genetic tests can now reveal...
At risk populations for many diseases