developmental psychology Flashcards
dominant gene
more active in influencing a trait
recessive gene
recede/fade into background when paired with a dominant gene
chromosomes
rod shaped structures found in the nucleus of the cell with highly wound strands of genes
monozygotic
identical twins
dizygotic
fraternal twins
3 stages of development
germinal
embryonic
foetal
germinal period
fertilization- 2 weeks zygote divides and moves down uterus forms a ball and attaches to the cell wall placenta forms cells begin to differentiate
embryonic period
cells continue to specialise (eyes,nose mouth…)
no organs are fully developed
2-8 weeks
foetal period
8 weeks - birth
teratogens more likely to affect physical function
continues growing and developing (organs)
teratogens
virus/other factors that can cause birth defects
critical period
environment influence can impact development
Foetal Alcohol syndrome
A characteristic pattern of abnormalities associated with alcohol intake during pregnancy
effects of FAS
1) growing deficiency
2) intellectual defects (affected central nervous)
3) characteristic facial features
physical development in infancy
very rapid
respiratory begins to function
cephalocaudal
gradual change in head size relative to body size