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Ch 2 Genetic and Environmental foundations Flashcards

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4834541430phenotypephysical traits and characteristics noticeable between child and parent.0
4834545750genotypecomplex blend of genetic info that determines our species and influences all our unique characteristics1
4834550355nucleuscenter and control center of cell. Contains chromosomes2
4834551089chromosomesStore and transmit genetic info. 23 matching pairs3
4834581946DNA deoxyribonucleic acid.Chromosomes made up of this chemical substance.4
4834586443baserungs of the DNA ladder that code for genetic instructions5
4834586444genea segment of DNA along the length of the chromosome6
4840452399protein-coding genes21,000 of them. Directly affect our body's characteristics. Send instructions for making rich proteins to the cytoplasm7
4840457100cytoplasmReceives instructions for protein making from protein-coding genes. Area surrounding nucleus8
4840459659regulator genes18,000 of them. Modify the instructions given by protein-coding genes.9
4840470713How do humans with far fewer genes than scientists thought manage to develop into such complex beings?The proteins our genes make which break up and reassemble in staggering variety.10
4840475049Simpler species have fewer proteins T or FT11
4840480072GametesIndividual sex cells (sperm and ovum) as a result from meiosis 23 chromosomes12
4840484050A gamete has how many chromosomes?23, half as many as a regular body cell13
4840485113meiosisCell division process which gametes are formed. It halves the number of chromosomes normally present in body cells. Genetic variability14
4840491298zygoteCell result of sperm and ovum uniting at conception15
4840494637zygote has how many chromosomes?4616
4840504501Shuffling of genes in meiosis creates...hereditary combinatioins17
4840510405autosomes22/23 chromosome pairs are matching. They are NOT sex chromosomes18
4840513691sex chromosomes23d and last chromosome pair. XX and XY19
4840515250X or Y has more genetic material?X20
4840528822fraternal or dizygotic twinsMost common type of multiple offspring, resulting from the release and fertilization of two ova21
4840538726identical or monozygotic twinsZygote started to duplicate separates into two clusters of cells that develop into two individuals. Same genetic makeup. Rare; more stress on babies development; slower dev than one baby born22
4840866310alleleOne of a pair of genes (one from mom, one from dad) that appear at a particular location on a particular chromosome and control the same characteristic, such as blood type or colorblindness23
4840875305homozygousIf alleles are alike means child will display inherited trait24
4840876566heterozygousIf alleles are different, relationships between the alleles determine the phenotype. Dominant-recessive inheritance.25
4840886305Dominant-recessive inheritanceIn heterozygous pairings. Dominant and recessive allele26
4840894429recessiveIf allele has no effect but can still be passed down27
4840898183carriers of a traitHeterozygous individuals with just one recessive allele (Dd) can pass that trait on to children.28
4840904224Phenylketonuria or PKURecessive autosomal disorder. Affects the way the body breaks down proteins contained in many foods. Intellectual disabilities29
4840949788Cooley's anemiaRecessive autosomal disorder. Pale, delayed physical growth, lethargic behavior30
4840953183Cystic fibrosisRecessive autosomal disorder. Lungs, liver, pancreas secrete lots of mucus. Hard to breathe and digest food31
4840956232Sickle cell anemiaRecessive autosomal disorder. Abnormality in oxygen-carrying protiens of red blood cells cause oxygen deprivation, pain, swelling, tissue damage32
4840968396Tay-Sachs diseaseRecessive autosomal disorder. CNS degeneration. Poor muscle tone, blindness, deafness, and convulsions33
4840978072Duchenne muscular dystrophyRecessive X-linked disorder. Degenerative muscle disease. Abnormal gait, loss of ability to walk between 7-13yrs old34
4840984579HemophiliaRecessive X-linked disorder. Blood fails to clot normally and lead to severe internal bleading and tissue damage35
4840986504Diabetes insipidusRecessive X-linked disorder. Insufficient production of the hormone vasopressin. Excessive thirst/urination. Dehydration cause CNS damage36
4840891906dominantIf only one allele affects the child's charateristics37
4840919480Huntington's diseaseDominant autosomal disorder. Central nervous system degenerates. Not appear until 35 yrs old38
4840995261Marfan SyndromeDominant autosomal disorder. Heart defects and eye abnormalities of lens. Skeletal defects.39
4841033887incomplete dominanceA pattern of inheritance in which both alleles are expressed in the phenotype, resulting in a combined trait or one that is intermediate between the two. Ex: Red+White=Pink; sickle-cell anemia40
4841044995X-linked inheritanceWhen a harmful allele is carried on the X-chromosome. Males more likely to inherit it because their sex chromosomes don't match. Females have 2 X-chromosomes so one of the X's can be recessive41
4841069753genomic imprintingAllele's are imprinted or chemically marked through regulator processes within the genome, in such a way that one pair member (mom or dad's) is activated regardless of its makup42
4841118369mutationa sudden but permanent change in a segment of DNA. One cause is bc of lots of radiation43
4841140575germline mutationMutations in cells that give rise to gametes. When affected individual mates, the defective DNA is passed to the next generation44
4841140576somatic mutationnormal body cells mutate at any time in life45
4841151315polygenic inheritanceIn which many genes affect the characteristic in question. complex genetic inheritance.46
4841182337Most chromosomal defects result from mistakes during...meiosis47
4841193296What is the most common chromosomal disorder? Failure of what chromosomeDown syndrome. 21 pair. Environmental factors effect dev significantly48
4841218046Sex Chromosomal DisordersXYY syndrome, Triple X syndrome, Klinefelter syndrome (XXY), Turner Syndrome (XO)49
4841246251Genetic counselinga communication process designed to help couples assess their chances of giving birth to a baby with a hereditary disorder and choose best course of action in view of risks and family goals50
4841257500pedigreepicture of the family tree in which affected relatives are identified51
4841262706genetic markersa gene or short sequence deviations of DNA used to identify a chromosome or to locate other genes on a genetic map.52
4841275802prenatal diagnostic methodsmedical procedures that permit detection of developmental problems before birth53
4841286509prenatal diagnostic methods list:amniocentesis chorionic villus sampling fetoscopy ultrasound maternal blood analysis ultrafast fetal MRI preimplantation genetic diagnosis54
4841303527gene therapycorrecting the genetic abnormalities by delivering DNA carrying a functional gene to the cells55
4841306616gene therapycorrecting hereditary defects56
4841308256proteomicsscientists modify gene-specified proteins involved in disease57
4841389517adoptionmore learning, emotional, social, cognitive problems for children58
4841547247microsystemfamily59
4841551922bidirectional influencebehaviors of each family member affect those of others60
4841563160be firm but warm with children for best developmenttrue61
4841566006harsh treatment means rebellion latertrue62
4841570721coparentingmutually supporting each other's parenting behaviors63
4841574836internalizing difficultiesMore girls: feeling worried about parents relationships64
4841579098externalizing difficultiesMore boys: anger and aggression65
4841593025chronosystemMajor life changes in child's life. Moving, marriage, divorce, death in family etc66
4841607330socioeconomic status (SES)Researchers asses family's through index using three variables: 1. yrs of education 2. prestige of one's job and skills it requires 3. income (economic status)67
4842230402High SESWealthier, less stress, want psychological traits for kids (curiosity, happiness, self-direction, cog and soc maturity). Warmth and verbal praise for kids68
4842239456Low SESLess money, stressful, want external characteristics for kids (obedience, politeness, neat/cleanliness). "Because I said so"69
4842256106affluent parentsThose in prestigious and high-paying occupations. Not as much family interaction. Kids more likely than low SES kids to get involved in drugs/alcohol70
4842298955PovertyKids not hopeful. Lifelong poor physical health, deficits in cog development, mental illness, aggression, antisocial behaviors71
48423188442 main factors in the rise of homelessness1. decline in the availability of government-supported low-cost housing 2. increase in poverty72
4842325415Most homeless families consist ofwomen and children73
4842377488Strong family ties to the community reduce family stresstrue74
4842388116Low-poverty neighborhoods show better_____ .. than povertymental and physical health, school achievement75
4842554655social support benefits:Parental self-worth Parental access to valuable info and services Child-rearing controls and role models Direct assistance with child rearing76
4842583991subculturesgroups of people with beiefs and customs that differ from those of the larger culture77
4842613569extended-family householdsParent and child live with one or more adult relatives78
4842617791familismIntergenerational shared parenting. Places an especially high priority on close, harmonious family bonds, frequent contact, and meeting family needs79
4842632673collectivismWestern European countries. People stress group goals over individual goals and value interdependent qualities.80
4842635883individualismUSA. People stress personal exploration, discovery, achievement and choice in relationships. Value personal needs and independence.81
4842649425public policiesLaws and gov programs designed to improve current conditions.82
4847910940Affordable Care ActIn the year 2010 extended government-supported health insurance to all children in low-income families. Expanded coverage for low-income adults (optional)83
4847947197Public policies aim to foster child development because of 2 reasons:1. Children are the future 2. Child-oriented policies can be defended on humanitarian grounds (child's basic rights as humans)84
4847958847Convention of Rights of the ChildLegal agreement among nations that commits each cooperating country to work toward guaranteeing environments that foster children's development: protect them from harm and enhance their community participation and self-determination85
4847982031behavioral geneticsA field devoted to uncovering the contributions of nature and nurture to this diversity in human traits and abilites86
4847988854polygenic traitstraits due to many genes. Intelligence, personality,87
4848001880How much does nature/nurture contribute to child differences?Heredity and environment are inseperable88
4848010751heritability estimatesMeasure the extent to which individual differences in complex traits in a specific population are due to genetic factors89
4848110855kinship studiesCompare the characteristics of family members. Identical twins have higher correlation scores of intelligence than other twins90
4848153269gene-environment interactionBecause of their genetic makeup, individuals differ in their responsiveness o qualities of the environment Two different genotypes respond to environmental variation in different ways (grades/intelligence, response to certain laws, obedience)91
4848178697Gene-environment interaction 2 points1. We all have diff genetic makeups so we respond differently to the same environment 2. Sometimes, different gene-environment combinations can make 2 people look the same92
4848201901gene-environment correlationOur genes influence the environments to which we are exposed. The way it happens changes with age93
4848211916Passive gene-environment correlationYounger ages. Child has no control over it. Child exposed to athletics because her parents are athletes94
4848219928evocative gene-environment correlationYounger ages. Children evoke responses that are influenced by the child's heredity and these responses strengthen the child's original style. Outgoing baby receives more social attention/stimulation95
4848267497Active gene-environment correlationOlder ages. Children extend their experiences beyond the immediate family and given freedom to make more choices. Actively seek environments that fit their genetic tendencies. Musical child chooses to get involved in a band96
4848288305niche-pickingTendency to actively choose environments that complement our heredity. Why identical twins share same hobbies97
4848305768Influence of heredity and environment NOT constant, but changes over timetrue98
4848337891internal stimulationBiology affects child's outcome. Activity in cytoplasm of cell, hormones released into blood99
4848342907external stimulationChild's environment affects child's outcome. Family, friends, school100
4848352048epigenesisDevelopment resulting from ongoing, bidirectional exchanges between heredity and all levels of environment101
4848361779methylationA biochemical process triggered by certain experiences, in which a set of chemical compounds lands on top of a gene and changes its impact, reducing or silencing its expression. "War twin" vs "Law twin" case study102

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