1777401177 | Genes | Hereditary units, program our genetic traits | 0 | |
1777401178 | DNA | Language of genes | 1 | |
1777401179 | Gametes | Reproductive cells are the vesicles from one generation to the next | 2 | |
1777401180 | Locus | The genes place on each chromosome | 3 | |
1777401181 | Asexual Reprodution | Results in the exact copies of themselves, sole parent passes all of its genes to its offspring without the fusion of gametes(sex cells) | 4 | |
1777401182 | Sexual Reproduction | Give rise to offspring that have unique combination of genes from two parents; not exact replicas like asexual | 5 | |
1777401183 | Homologous Chromosomes | Both arms of each chromosome containing the genes controlling the same trait | 6 | |
1777401184 | 23 | # of chromosomes in a set | 7 | |
1777401185 | Haploid Cells | Has a single set of chromosomes | 8 | |
1777401186 | Meiosis | Divides the number of chromosomes in half ending with four haploid chromatids | 9 | |
1777401187 | Stages of Meiosis | 1. Single pairs of homologs in a diploid cell 2. Both members of the pair are duplicated creating sister chromatids 3. The copies are sorted into four haploid daughter cells | 10 | |
1777401188 | Sister Chromatid Cohesion | Sister chromatids closely associated all along their lengths | 11 | |
1777401189 | Homologs and their sister chromatid make up | one duplicated chromosome | 12 | |
1777401190 | Cell death occurs through either | Necrosis or Apolosis | 13 | |
1777401191 | Necrosis | Cell death through O2 depletion or damage to the cell | 14 | |
1777401192 | Apolosis | DNA breakdown; wearing down of telomere until it can not replicate anymore resulting in cell death | 15 | |
1777401193 | How many times a somatic cell can divide before DNA degradation occurs | 20 | 16 | |
1777401194 | Synapsis | pairing of chromosomes | 17 | |
1777401195 | Chiasma | The spot where the sister pairs of homologs cross over | 18 | |
1777401196 | Crossing over | Creates more variation, exchange of DNA between homologs; where genetic material from mom and dad mix and become part of the others chromosome | 19 | |
1777401197 | Tetrad | A homologous pair; two whole replicated chromosomes | 20 | |
1777401198 | Interkinesis | At the end of telophase one, where the cell relaxes before it enters prophase two | 21 | |
1777401199 | Three types of sexual cycles | 1. Haplontic 2. Diplontic 3. Alternation of generation | 22 | |
1777401200 | Haplonic | For most of its life it is halpoid and a small portion it is diploid | 23 | |
1777401201 | Diplontic | For most of its life it is diploid and a small portion it is haploid | 24 | |
1777401202 | Alternation of Generation | Only in plants; half of its life it is spent haploid the other half diploid | 25 | |
1777401203 | Euploidy series | Organism has the amount of chromosomes it needs; has its full compliment | 26 | |
1777401204 | Aneuploidy series | There is a mutation during meiosis where the chromosomes do not separate correctly and take the wrong number of chromosomes to poles | 27 | |
1777401205 | Meiosis reduces the number of chromosomes from | diploid to haploid | 28 | |
1777401206 | Generates genetic variation | Random orientation of pairs of homologous chromosomes during meiosis | 29 | |
1777401207 | Homologous | One maternal and one paternal chromosome situated at metaphase plate | 30 | |
1777401208 | Independent assortment | After the first meiotic division results in each pair sorting its maternal and paternal homologs into daughter cells that are independent | 31 | |
1777401209 | Karyotype | Depectin (picture) of the chromosomes | 32 | |
1777401210 | Y chromosome and X chromosome | can not cross over | 33 | |
1777401211 | Two members of homologous pairs | associated loosely along their length (prophase 1) | 34 | |
1777401212 | At least one cross over per chromosome must occur in order for | the homologous pair to stay together as it moves to metaphase 1 plate | 35 | |
1777401213 | differ genetically | Meiosis produces cells that | 36 | |
1777401214 | Three events unique to meiosis that occur in meiosis 1 | 1. Synapsis and crossing over 2. Homologous pairs of metaphase plate 3. Separation of homologs | 37 | |
1777401215 | cohesion | Sister chromatids stay together due to | 38 | |
1777401216 | Cohesions last until | the end of metapase | 39 | |
1777401217 | Meiosis 1 is called the reductional division because | it reduces from diploid to haploid | 40 | |
1777401218 | During meiosis 2 | sister chromatids separate resulting in the four haploid daughter cells (equational division) | 41 | |
1777401219 | Results in the formation of chiasma | Combo of crossing over and sister chromatid cohesion along arms | 42 | |
1777401220 | homologs | Chiasmata hold together | 43 | |
1777401221 | 1st divison, 2nd division | reductional, equational | 44 |
Campbell Biology 10th Edition: Ch. 13 Flashcards
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