TAG BIO MEIOSIS Jan 2012
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Mitosis | show 🗑
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| show | produces daughter nuclei with only half the original number of chromosome (4 daughter 1 n cells)
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| zygote | show 🗑
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| show | sex cells----sperm and eggs
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| replicate | show 🗑
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| show | two identical double stranded molecules of DNA attached to each other by the centromere
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| homologous chromosomes | show 🗑
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| diploid | show 🗑
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| haploid | show 🗑
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| show | 4n. Four homologous chromosomes of each type. For example found in plants
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| show | cells that can undergo meiosis. The REST of the body's cells arfe called somatic (soma = body) cells
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| show | body cells (i.e. not sex cells)
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| define how the number of chromosomes varies among each species, give some examples | show 🗑
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| show | pairs, chromosomes
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| show | each of the 2 parents contributes one of each pair of chromosomes.
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| haploid ((n) | show 🗑
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| show | 46 = 2n 23 = n
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| show | a pair of chromosomes are called 'homologous' chromosomes. For example, chromosome #1 from father and chromosome #1 from mother are the pair of #1 chromosomes. The pair of #1's are called 'homologous' chromosomes. Same for chromosome #2 and its pair #2...
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| What produces the variety we see in members of the same species. | show 🗑
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| somatic | show 🗑
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| gamete | show 🗑
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| What happens during fertilization | show 🗑
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| show | fertilized egg
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| give a sone-sentence definition of meiosis | show 🗑
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| show | haploid gametes in simple plants. Usually spores do asexual reproduction
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| give some differences between sexual and asexual reproduction with regards to meiosis and gametes (include clones and fertilization) | show 🗑
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| show | rerplicate same set of chromosomes into multiple cells and grow new copy of individual
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| name 3 wauys meiosis differs from mitosis | show 🗑
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| describe crossing over when does it occur and why is it important | show 🗑
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| show | it has 2 rounds of division (meiosis I and II) but only one round of chromosome duplication (in inter phase I before meiosis starts)
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| show | 1. crossing over happens in meiosis I but not mitosis
2. homologous chromosomes (#1 and #1) (#2 and #2) pair up in meiosis I but not mitosis.
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| show | 2 daughter cells. 2n, mixed paternal and maternal chromosomes from crossing over.
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| show | sister chromatids
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| show | 1. crossing over for genetic variety
2. gametes with correct distribution of chromosomes
3. 4 haploid cells such that sexual reproduction can occur
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| show | male gametes usually divide cytoplasm equally
female gametes most of the cytoplasm stays with one cell
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| What are polar bodies? | show 🗑
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| Prokaryotic cells perform which of the above for reproducing cells? meiosis mitosis binary fission | show 🗑
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| What is a synonym for 'sister chromatids' (they look like an X) | show 🗑
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| Germinal cells of ovaris that go through meiosis are diploid or haplid? | show 🗑
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| A chromosome pair that has the same type of genetic information at the same location and have centromeres located in the same location is known as: a. homologous pair b. replicated chromosomes c. sister chromatids | show 🗑
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