for biology test #3
Terms : Hide Images
| 423031046 | synapsis | The pairing and physical connection of duplicated homologous chromosomes during prophase I of meiosis | 1 | |
| 423031047 | chromatin | The entire complex of DNA and proteins that is the building material of chromosomes. | 2 | |
| 423031048 | sexual reproduction | Two parents give rise to offspring that have unique combinations of genes inherited from both parents | 3 | |
| 423031049 | cleavage furrow | Cytokinesis in animal cells is accomplished by a groove formed around the cell near the old metaphase plate called a _______. | 4 | |
| 423031050 | cell division | The continuity of life is based on reproduction of cells or ____. | 5 | |
| 423031051 | aster | A radial array of short microtubules that extends from each centrosome toward the plasma membrane in an animal cell undergoing mitosis. | 6 | |
| 423031052 | homologous | A pair of chromosomes of the same length, centromere position and staining pattern that possess genes for the same characteristics at corresponding loci are said to be _____. | 7 | |
| 423031053 | telophase | The fifth stage of mitosis in which daughter nuclei are forming and cytokinesis has typically begun | 8 | |
| 423031054 | cisternae | A membrane bound, flattened sac located at the midline of a dividing plant cell. | 9 | |
| 423031055 | genome | The total genetic material of an organism or virus. | 10 | |
| 423031056 | haploid | Cells that contain a single set (n) of chromosomes. | 11 | |
| 423031057 | prophase | The first stage of mitosis in which the chromatin condenses into discrete chromosomes. | 12 | |
| 423031058 | meiosis | A modified type of cell division in sexually reproducing organisms that results in cells with half the number of chromosomes as the original cell. | 13 | |
| 423031059 | sister chromatids | Two copies of a duplicated chromosome attached to each other by proteins at the centromere. | 14 | |
| 423031060 | cytokinesis | The division of the cytoplasm into two daughter cells. | 15 | |
| 423031061 | interphase | The period in the cell cycle when the cell is not dividing. | 16 | |
| 423031062 | anaphase | The fourth stage of mitosis in which chromatids have separated and are moving to the poles of the cell. | 17 | |
| 423031063 | recombinant chromosome | The random orientation of pairs of homologous chromosomes at metaphase I or meiosis I. | 18 | |
| 423031064 | binary fission | The type of replication found in prokaryotes (a type of asexual reproduction). | 19 | |
| 423031065 | somatic cells | All body cells except the reproductive cells. | 20 | |
| 423031066 | mitosis | A process of nuclear division in eukaryotic cells that conserves chromosome number by allocating replicated chromosomes equally to each of the daughter cells. | 21 | |
| 423031067 | chromosome | A cellular structure carrying genetic material, found in the nucleus of eukaryotic cells. | 22 | |
| 423031068 | metaphase | The third stage of mitosis in which chromosomes are attached to microtubules and align at the equator. | 23 | |
| 423031069 | recombinant | Individual chromosomes that carry genes derived from two different parents as a result of crossing over are said to be ______. | 24 | |
| 423031070 | centromere | A region containing specific DNA sequences where the chromatid is attached most closely to its sister chromatid. | 25 | |
| 423031071 | alternation of generations | A type of life cycle in plants and some algae in which there is both a multicellular diploid form, the sporophyte, and a multicellular haploid form, the gametophyte. | 26 | |
| 423031072 | crossing over | The reciprocal exchange of genetic material between non-sister chromatids during somatic cells. | 27 | |
| 423031073 | kinetochore | A structure of proteins attached to the centromere that links each sister chromatid to the mitotic spindle. | 28 | |
| 423031074 | cell cycle | The life of cell from the time it is first formed from a dividing parent cell until its own division into two daughter cells. | 29 |
