Chapter 8: Development Across the Life Span Flashcards
Scientific study; changes that occur from conception to death
Human Development
One participant/group studied over long period of time
Longitudinal Design
Multiple different participant/age groups studied at one point in time
Cross-sectional Design
First studied by cross-sectional design; followed longitudinally
Cross-sequential Design
Impact on development; group shares common time period/life experience
Cohort Effect
Influence of inherited characteristics on personality
Nature
Influence of environment on personality
Nurture
Science of inherited traits
Genetics
Contains genetic material of organism
DNA
Section of DNA
Gene
Tightly wound strand of DNA
Chromosome(s)
Gene actively controls expression of trait
Dominant
Gene only influences when paired with an identical gene
Recessive
Diseases carried by ________ genes are inherited when a child inherits ____ _______ genes, ____ from each parent.
recessive; two recessive; one
(cystic fibrosis, sickle-cell anemia, Tay-Sachs, phenylketonuria)
Extra chromosome in what would be the 21st pair
Down Syndrome
Extra sex chromosome in the 23rd pair
Klinefelter Syndrome
23rd pair is missing an X
Turner Syndrome
(short, infertile, & sexually underdeveloped)
Union of ovum (female egg) and sperm (male cell)
Fertilization
Total of 46 chromosomes; result of fertilization
Zygote
Identical twins; one zygote splits into two different cell masses (one fetus)
Egg fertilized by one sperm, then egg splits in half
Monozygotic Twins
Fraternal twins; two zygotes in uterus at the same time (two fetuses)
Two eggs fertilized by two different sperms
Dizygotic Twins
Study of ethical and moral issues; biology and medicine
Bioethics
2 weeks after fertilization; zygote moves to uterus and implants in lining
Germinal Period
2 to 8 weeks after fertilization; organism being formed
Embryo
2 to 8 weeks after fertilization; major organs and structures begin developing
Embryonic Period