AP Notes, Outlines, Study Guides, Vocabulary, Practice Exams and more!

Genetics Flashcards

Chapter 6 and Chapter 8

Terms : Hide Images
1077312039Somatic CellThe Cells that make up the body tissue and organs ie Body Cells.0
1077312040GameteThe Cells that allow DNA to be passed to the next generation ie Sex Cells.1
1077312041Homologous ChromosomeA chromosome structure composed of one chromosome from your mother and one from your father.2
1077312042AutosomeChromosomes that contain genes not related to the gender of the organism.3
1077312043Sex ChromosomeChromosomes that directly control the development of sexual characteristics.4
1077312044Sexual ReproductionThe fusion of two gametes that result in offspring that are a genetic mixture of both parents.5
1077312045FertilizationThe actual fusion of an egg and sperm cell to form one nucleus.6
1077312046DiploidA cell that has two copies of each chromosome, one from the mother and one from the father.7
1077312047HaploidA cell that has one copy of each chromosome.8
1077312048MeiosisA form of nuclear division that divides a diploid cell into haploid cells.9
1077312049GametogenesisThe Production, or Beginning (as evidenced by "-genesis"), of gametes.10
1077312050SpermThe Male Gamete.11
1077312051EggThe Female Gamete.12
1077312052Polar BodyA short-lived product of the formation of gametes by meiosis.13
1077312053TraitDistinguishing characteristics that are inherited.14
1077312054GeneticsThe study of biological inheritance patterns and variation in organisms.15
1077312055PurebredAn organism that always produces offspring with the same form of a trait as the parent.16
1077312056CrossThe mating of two organisms.17
1077312057Law of SegregationMendel's law that states that the pairs of homologous chromosomes separate in meiosis so that only one chromosome from each pair is present in each gamete.18
1077312058GeneA segment of DNA on a chromosome that codes for a specific trait.19
1077312059AlleleAn alternative form of a gene.20
1077312060HomozygousAn organism that has two identical alleles for a trait.21
1077312061HeterozygousAn organism that has two different alleles for a trait.22
1077312062GenomeAll the genetic information in an organism; all of an organism's chromosomes.23
1077312063GenotypeAn organism's genetic makeup.24
1077312064PhenotypeAn organism's physical appearance, or visible traits.25
1077312065DominantThe allele that is expressed when two different alleles or two dominant alleles are present.26
1077312066RecessiveThe allele that is only expressed when there is no dominant allele.27
1077312067Punnett SquareA chart that shows all the possible combinations of alleles that can result from a genetic cross.28
1077312068Monohybrid CrossCrosses that examine the inheritance on one specific trait.29
1077312069TestcrossA cross between an organism with an unknown genotype and an organism with the recessive phenotype.30
1077312070Dihybrid CrossCrosses that examine the inheritance of two different traits.31
1077312071Law of Independent AssortmentThe second law of genetics, which states that allele pairs separate independently of each other during gamete formation, or meiosis.32
1077312072ProbabilityThe likelihood that a particular even will happen33
1077312073Crossing OverThe exchange of chromosome segments between homologous chromosomes pro phase I of Meiosis.34
1077312074Genetic LinkageThe tendency for alleles of genes on the same chromosome to be inherited together.35
1089881136BacteriophageA virus that takes over a bacterium's genetic machinery and directs it to make more viruses.36
1090246399NucleotidesThe small units, or monomers, that make up DNA.37
1090246400Double HelixTwo Strands of DNA twisting around each other.38
1091112428Base Pairing RulesThymine (T) always pairs with Adenine (A) and Cytosine (C) always pairs with Guanine (G).39
1091112429ReplicationThe process in which DNA is copied during the cell cycle.40
1091112430DNA PolymerasesEnzymes that form bonds between nucleotides during replication.41
1091112431Central DogmaGenetic Information flows in DNA to RNA to Protein.42
1091112432RNAA chain of nucleotides, each made of a sugar, a phosphate group, and nitrogen-containing base.43
1091112433TranscriptionThe process of copying a sequence of DNA to produce a complementary strand of RNA44
1091112434RNA PolymerasesEnzymes that bond nucleotides together in a chain to make a new RNA molecule.45
1091112435Messenger RNA (mRNA)An intermediate message that is translated to form a protien.46
1091112436Ribosomal RNA (rRNA)Forms part of ribosomes, a cell's protein factories.47
1091112437Transfer (tRNA)Brings amino acids from the cytoplasm to a ribosome to help make the growing protien.48
1091112438TranslationThe Process that converts, or translates, an mRNA message into a polypeptide.49
1091112439CodonA three-nucleotide sequence that codes for an amino acid.50
1091112440Stop CodonSignals the end of the amino acid chain.51
1091112441Start CodonSignals the start of translation and the amino acid methoinine.52
1091112442AnticodonA set of three nucleotides that is compemetary to an mRNA codon.53
1091112443PromoterA DNA segment that allows a gene to be transcribed.54
1091112444OperonA region of DNA that includes a promoter, an operator, and one or more structural genes that code for all the proteins needed to do a specific task.55
1091112445ExonsNucleotide segments that code for parts of protein.56
1091112446IntronsNucleotide segments that intervene, or occur, between exons.57
1091112447MutationA change in the an organism's DNA.58
1091112448Point MutationA mutation in which one nucleotide is substituted for another.59
1091112449Frameshift MutationThe insertion of deletion of a nucleotide in the DNA sequence.60
1091112450MutagensAgents in the environment that can change DNA.61
1138482797CarrierA person who doesn't show disease symptoms, but can pass on the disease-causing gene to offspring.62
1138482798Sex-linked geneGenes located on the sex chromosomes.63
1138482799X chromosome inactivationWhen, in female mammals, one of two X chromosomes is randomly "turned off"64
1138482800Incomplete dominanceA heterozygous phenotype is somewhere between the homozygous dominant phenotype and the homozygous recessive phenotype.65
1138482801CodominanceIn which both traits are fully and separately expressed.66
1138482802Polygenic TraitTraits produced by two or more genes.67
1138482803Linkage MapMaps of relative locations, or loci, of genes on a chromosome.68
1138482804Pedigree chartA chart that can help trace the phenotypes and genotypes of in a family to determine whether people carry recessive alleles.69
1138482805KaryotypeA picture of all of the chromosomes in a cell.70

Need Help?

We hope your visit has been a productive one. If you're having any problems, or would like to give some feedback, we'd love to hear from you.

For general help, questions, and suggestions, try our dedicated support forums.

If you need to contact the Course-Notes.Org web experience team, please use our contact form.

Need Notes?

While we strive to provide the most comprehensive notes for as many high school textbooks as possible, there are certainly going to be some that we miss. Drop us a note and let us know which textbooks you need. Be sure to include which edition of the textbook you are using! If we see enough demand, we'll do whatever we can to get those notes up on the site for you!