Important announcement. Another quiz for extra credit will be held on 9/20. There will be no exam on 9/22; rather there will be a regular class session. Most of the quizzes for extra credit will be pop-ups, so please get your own scantrons and pencils everyday to class.
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Another quiz for extra credit will be held on 9/20. There will be no exam on 9/22; rather there will be a regular class session.
Most of the quizzes for extra credit will be pop-ups, so please get your own scantrons and pencils everyday to class.
You can gain a maximum of 2 points on these pop-ups.
The next exam is scheduled on 10/4
Multifactoral traits—inherited traits produced by interaction of genes and environment
Genes merely produce proteins, not mature traits.
Without genes, no behavior would exists. But without environment no gene would be expressed.
Polygenetic traits—inherited traits produced by gene interaction
Additive, dominant recessive, on-off mechanisms.
Phenotype: the actual expression of a trait
Careers are the genes in our genotype which is not expressed in out phenotype.
Behavior genetics: is the study of what amount of out personality is determined by our genes
Monozygotic twins—identical twins originate from one zygote & share identical instructions
Dyzygotic or fraternal: fertilization for two different ova. share no more genes than other offspring (about 50 percent)
women in late 30’s are three times more likely to have dizygotic twins. As menopause approaches, ovulation becomes irregular with some cycles produce no ova while others produce multiple ovas
Personality disorders: inherited bio-chemistry predisposes to these disorders
Alcoholism, psychopathology, etcDiseases and disorders
it is psychological and physical, and biological;
thus alcoholism is polygenetic, with alcoholics inheriting a combination of biochemistry-affecting and temperament-affecting genes
Culture counts too(whether alcohol is present in environment)
most likely variable that creates chromosomal abnormalities is mother’s age (over 35)
father’s age (over 40) also a variableChromosomal Abnormalities