Term
| ALL cells (except sex cells) have the exact same chromosomes-- different cell types have different structures and functions is because |
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Definition
| the expression of what is coded in the DNA is unique to that cell type |
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| binary fission is a type of ____ reproduction |
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| interphase is composed of |
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Definition
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Definition
| growth and get new organelles |
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Definition
| cell is committed to continue through the rest of the cell cycle and divide |
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| some cells never divide--enter __ phase |
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Definition
| snythesis-- each chromosome is replicated into two identical sister chromatids |
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| holds sister chromatids together |
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Definition
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| after DNA replication the cell has ___ number of chromosomes |
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Definition
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Definition
| more growth and formation of organelles |
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Term
| can you see the membrane of the nucleus in interphase? |
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Definition
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Term
| can you see the membrane of the nucleus in mitosis? |
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Definition
| no--it dissolves in prophase so that the spindle fibers can enter the nucleus |
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Term
| can you see individual chromosomes in interphase? |
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Definition
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Term
| chromosomes coil condense and become visible in |
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Definition
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Definition
| before the first stage of mitosis |
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Definition
| chromosomes condense, spindles form, centrioles move to opposite poles |
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Term
| what happens in metaphase |
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Definition
| chromosomes align on metaphase plate |
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Definition
| sister chromatids separate at centromeres |
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Definition
| shorten during anaphase to pull sister chromatids during opposite poles; appear during prophase |
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Term
| what happens during telophase |
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Definition
| new nuclear membrane forms, spindle disappears, chromosomes uncoil, cytokinesis |
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Definition
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Definition
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| types of asexual reproduction |
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Definition
| 1. binary fission 2. budding 3. regeneration 4. parthenogenesis |
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Definition
| development of an unfertilized egg into an adult organism --all cells are haploid |
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Term
| occurs in hydra and yeast |
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Definition
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Term
| replication of nucleus followed by unequal cytokinesis |
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Definition
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Term
| produces two intermediate daughter cells |
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Definition
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Term
| produces four genetically distinct haploid gametes |
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Definition
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Term
| involves separation of sister chromatids similar to mitosis |
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Definition
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Term
| the further apart two genes are the ___ likely they are to become unlinked during crossing over |
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Definition
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Term
| homologous chromosomes are inherited |
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Definition
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Definition
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Definition
| homologous chromosomes come together and intertwine |
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Definition
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| sister chromatids are no longer identical after____ has occured |
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| homologous pairs sepearte in |
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Definition
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Definition
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Term
| meiosis II differs from mitosis in that meiosis II is |
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Definition
| not preceded by chromosomal replication |
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Term
| in meiosis homologous chromosomes pair up at the metaphase plate forming |
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Definition
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Term
| in mitosis homologous chromosomes.. |
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Definition
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Definition
| SEVEN UP: seminiferous tubules, epididymis, vas deferens, ejaculatory duct, nothing, urethra, penis |
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Definition
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| production of female gametes |
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Definition
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Term
| after meiosis I in females you get |
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Definition
| two daughter cells of unequal size-- a secondary oocyte and a polar body |
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Term
| hormones that stimulate follice development in women |
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Definition
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Term
| single zygote splits into two embryos |
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Definition
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Term
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Definition
| incomplete division (monozygotic) |
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Term
| are monozygotic twins genetically identical? |
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Definition
| yes--same blood type sex etc |
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Term
| two ova are released in one ovarian cycle and fertilized by two different sperm |
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Definition
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Term
| do fraternal twins share more characteristics than other sibings? |
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Definition
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Term
| cell spends 90% of life in |
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Definition
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Term
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Definition
| nuclear membrane disappears, chromosomes condense, spindle forms |
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Term
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Definition
| chromosomes line up on metaphase plate |
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Term
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Definition
| sister chromatids separate and move to opposite poles |
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Term
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Definition
| cytokinesis, nuclear membrane reforms |
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Term
| after cytokinesis there are |
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Definition
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Term
| mitosis is continuous, meiosis is |
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Definition
|
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Definition
| spermatogonium--primary spermatocyte--(meiosis I)secondary spermatocytes--(meiosis II)--sperm cells |
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Term
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Definition
| oogonium--primary oocyte-(meiosis I)--secondary oocyte + polar body--(meiosis II)-ovum + second polar body |
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Definition
| oogonium--primary oocyte-(meiosis I)--secondary oocyte + polar body--(meiosis II)-ovum + second polar body |
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Term
| is spermatogenesis continuous? |
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Definition
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Definition
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Term
| where is oogenesis stuck? |
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Definition
| prophase I each month until ovulation, finish meiosis II once its fertilized (stuck in telophase I) |
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Definition
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Definition
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| FSH stimulates gamete production in |
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Definition
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Term
| acquired characteristics ___ affect genes and therefore ____ passed on |
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Definition
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Definition
| prepares uterus for implantation of zygotes |
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