Development 2 Flashcards
Zygote
cell contains 23 chromosomes from each parent
quickly divides at exponential rate
Monozygotic Twins
genetically identical, same sperm and ovum
Dizygotic Twins
share about 50% of genes, different sperm and ovum
Genotype
individual inherited genes
Single dominant- recessive inheritance
expression of a trait is determined by a single pair of alleles
polygenetic inheritance
when the expression of a trait is determined by the interaction of multiple genes
Co-dominance
trait that is determined equally by two dominant alleles
Sex-linked Inheritance
involves genes expressed on X chromosome
Naturists
believe genes predetermine the path of development
Nurturists
believe development is influenced by environment
Canalization Principle
genotype restricts phenotype to a small number of possible developmental outcomes
Range of Reaction Principle
genotype establishes a range of possible responses to difference kinds of life experiences
Passive Genotype/Environmental correlations
environment parents choose to raise their children in was influenced by parents genes
Evocative Phenotype
traits we have inherited affect how others react to and behave towards us
Active Genotype
our genotypes influence the kinds of environments we seek