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Devlopnental Psych

Chapter 2 Quiz

TermDefinition
Chromosomes Rod-shaped structures composed of genes that are found within the nuclei of cells
Gene The basic unit of heredity, composed of deoxyribonucleic acid (DNA)
DNA Deoxyribonucleic acid, genetic material that’s takes the form of a double helix composed of phosphates, sugars, & bases
Sex chromosome Chromosome in shape of Y (male) or X (female) that determines the anatomical sex of the child
Monozygotic twins Twins that derive from a single zygote; identical twins
Dizygotic twins Twins that derive from two zygotes; fraternal twins
Dominant trait A trait that’s expressed
Recessive trait Trait that’s not expressed when the gene or genes involved have been paired with dominant traits
Testosterone Male sex hormone produced mainly by testes
Estrogen Female sex hormone produced mainly by ovaries
Prenatal Before birth
Amniocentesis Procedure for drawing & examining fetal cells sloughed off into amniotic fluid to determine the presence of various disorders
Uterus The hallow organ within females in which the embryo & fetus develop
Genotype The genetic form or constitution of a person as determined by heredity
Phenotype The actual form or constitution of a person by hereditary & environmental factors
Placenta An organ connected to the uterine wall & to fetus VIA umbilical cord
Teratogens Environmental influences or agents that can damage the embryo or fetus
Critical period/sensitive period The period from 18 months to puberty when the brain is especially capable of learning language
Created by: Delaneyy.hughess
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