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AP Biology chapter 11 Flashcards

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2018466809what arises skin tone variation in humansmelanosomes0
2018466810organisms in skin cells that makes red and brownish-black pigments, called melaninsmelanosomes1
2018466811dark skin has been adaptive fromthe intense suns of the African savannas where humans first evolved2
2020548318Gene mutation for skin colorSLC 24 A5 or DCT3
2020548319Why was blending inheritance a fail?because a child doesn't always receive the exact physical traits that there parents have4
2020548320Unit for dividing heriditary materialgenes5
2020548321Austrian monk who breeded pea plantsGregor Mendel6
2020548322All offspring have the same form of the trait as the parents through generationsBreeding true7
2020548323Structure in which the sperm develop located in the anthers of plantspollen grains8
2020548324Each gene occurs at a specific location ---- on a specific chromosomelocus ( loci)9
2020548325Permenant change in a gene it may cause h rate to changemutation10
2020548326The offspring of a cross or mating of 2 individuals that breed true for different forms of a trait. Has non identical alleles for the trait.hybrid11
2020548327an individual with non identical alleles of a geneheterozygous12
2020548328an individual with identical alleles of a genehomozygous13
2020548329An allele is --- if its effect masked the effect of a --- allele paired with itdominant, recessive14
2020548330represents dominant alleleCapital letters15
2020548331Represents recessive alleleslower case letters16
2020548332Has a pair of dominant alleles (AA)homozygous dominant17
2020548333Individual has a pari fo recessive alleles(aa)homozygous recessive18
2020548334Has a pair of non identical alleles (Aa) (Hybrid)Heterzygous19
2020548335Process by which information in a gene is converted to a structural or functional part of a cell or body - determine traitsgene expression20
2020548336Refers to the particular alleles of an individual carriesgenotype21
2020548337Refers to an indiviuals traitsphenotype22
2020548338F is an abbreviation forFilial (offspring)23
2020548339Stands for first generation offspring of parentsF124
2020548340Stands foe second generation offspringF225
2020548341Method of determining a genotype. Individual of unknown genotype is crossed with one that is known to be homozygous recessiveTestcross26
2020548342Test crosses that check for a dominance relationship between 2 allele at a single locusmono hybrid experiment27
2020548343Typical mono hybrid experimentAa X Aa28
2020548344Measure of the chance that a particular outcome will occurprobability29
2020548345Grids used to calculate the probability of genotypes/phenotypes that will occur in offspringPunnett squared30
2020548346Diploid cells have pairs of genes on pairs of homologous chromosomes. The 2 genes of each pair are separated from each other during meiosis so they end up in different gametes.Mendel's law of segregation31
2020548347Test for dominant relationships between alleles at 2 loci. Individuals with different alleles are crossed or self fertilizeddi-hybrid experiments32
2020548348If 2 di-hybrids are crossed their alleles can combine in ---- possible ways at fertilization16 (4 types of gametes in one individual X 4 types of gametes in the other)33
2020548349Genes are sorted into gametes independently of other genesMendel's law of independent assortment34
2020548350A possible exception to Mendel's law of indepent assortmentgenes that are relatively close together on the same chromosome tend to stay together during meiosis35
20205483512 non identical alleles of a gene are both fully expressed in heterozygous - neither dominant or recessivrecodominance36
20205483523 or more alleles of a gene persist among individuals of a populationmultiple allele systems37
2020548353Blood type allelestype A and type B are codominant Type O is recessive38
2020548354One allele of a pair is not fully dominant over its partner so the heterozygoous phenotype is somewhere between the 2 homozygousincomplete dominance39
2020548355Example of incomplete dominance is a snapdragon. explainif one red and one white are breeded together, the offspring in F1 will be pink but the offspring in F2 will be 2 pink, 1 red, 1 white40
2020548356some traits are effected by interactions among gene products an effect calledEpistasis41
2020548357Epistasis causes gene variation in chickensCombs42
2020548358another example of epistasis is labridor retrieverscoat color - black, yellow or brown43
2020548359A dogs coat color depends onhow products of alleles at more then 1 locus make a dark pigment, melanin, and deposit it in tissues44
2020548360Alleles for dogB(black) is dominant to b(brown) A dog with two E alleles has yellow fur regardless of which allele it is paired with45
2020548361Are we having fun yet?Absolutely46
2020548362one gene may influence multiple traits an effect calledPleiotropy47
2020548363common example of pleiotropygene encoding products used throughout the body, long fibers or filbrillian elasticity to the tissues of the heart, skin,blood vesels, tendons48
2020548364cause genetic disorder marfan syndrome in which tissues form with defective fibrilillin or none at all. Aorta is largely effected.mutations in the fibrilillin gene49
2020548365The probablity that a crossover event will separate alleles of 2 genes is proportional to---the distance between those genes50
2020548366all genes of one chromosome are called ---linkage group51
2020548367enzyme that effects the coat color in himalyan rabbitsTyrosinase52
2020548368the indivuals of a species typically vary in many of their shared traits. Some of these traits appear in 2 or 3 forms; others occur in a range of small differences called---continuos variation53
2020548369outcome of polygenic inheritance in which multiple genes effects a single traitContinuos variation54
2020548370An example of continuos variationeye color55
2020548371a bell shaped curve on a bar graph shows continuous variationbell curve56

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