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Glossary of Devlopmental psychology Chap 2.1

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Chromosomes
46 present in each nuclei of every cell in your body, matched in 23 pairs
Genes
Hundreds of Genes in each chromaosome
Dna
Makes up genes, double helix formation
Autosomes
first 22 chromosomes, code for body functions and structures
Sex chromosomes
23rd pair code for sex
xx = female
xy = male
Genome
entire package of genetic material
Monomorphic
75% of genes are idetical, make us human
Polymorphic
25% of genes makes people individuals
Genotype
traits that are availbe
phenotype
traits that are visiable or expressed
Alleles
genes that code for eye color and similar traits
Dominant
the trait most likely to be expressed as a phenotype
x-linked
traits or disorders linked to the x chromsome
polygenic
results of more then one gene and usually some enviormental influence
Behavior Genetics
Examines how geneyics contributes to Human behavior
Alpha-fetoprotien analysis
done on mothers blood, protien produced in fetus during early devlopment. should not be in mothers blood pesents suggest abnormaility
Chorionic Villus Biopsy
8 to 10 wks of pregnacy a smallpeice of inner plecenta is removed and tested
Apgar scale
administered at 1 and 5 min.
5 varibles each scored 0-2
heart rate, breath rate muscle tone oxyagenation, response to stimuli.7 to 10 is normal score below 5 serious problem

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