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BIOL 1003 Study Guide - Quiz Guide: Karyotype, Trisomy, Amniocentesis

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brownskunk801
21 Feb 2014
School
Carleton University
Department
Biology
Course
BIOL 1003
Professor
Iain Mc Kinnell

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Document Summary

For exam: 3 sources of variation know: telophase 1, each pole now has haploid set with nuclear membrane, cytokinesis: 2 distinct cells, cleavage furrow, meiosis 2, move from meiosis 1 2, no duplication of dna, chromosomes of sister chromatids is same, interphase 2 has no new replication, chromosomes will recondense, separating sister chromatids, nuclear membrane gone, spindle forms and moves into nucleus and microtubules will contact chromosomes, arrange them across metaphase plate, anaphase 2 breaks down microtubules and pull sister chromatids apart (independent chromosomes) have haploid set at each pole, nuclear membrane forms and cytokinesis forms 4 haploid sex cells, how does chromosome number halve, similarities, mitosis vs. meiosis starts with parent cell and gets duplicated, tetrads, crossing over in prophase 1 in meiosis, separating sister chromatids, separate homologous pairs, require second division to separate chromatids, 1st division pulls apart pairs and second division separates sister chromatids.

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Related Questions

Determine whether the following applies to mitosis, meiosis, orboth; also identify the specific stage of cell division thatapplies (e.g. mitosis prophase, meiosis anaphase II, etc)



1) chromosomes pairs line up across the center of the cell


2) sister chromatids seperate


3) spindle fibers separate homologous chromosomes


4) 4 haploid daughter cells are produced


5) a cell 1st undergoes DNA replication


6) chromosomes line up single file across the middle of thecell


7) sister chromatids separate from each other


8) 2 haploid daughter cells form


9) the nuclear membrane re forms


10) spindle fibers attach to pairs of homologous chromosomes


11) the nuclear membrane begins to dissolve


12) centrosomes duplicate


13) synapsis and crossing over occurs


14) 2 diploid daughter cells form

10. Make a simplified diagrammeiosis starting with a cell containing3 pairs ofchromosomes.

  • Include and Label: Each stageof meiosis I & II and indicate if a cell is haploid (n) ordiploid (2n); plasma membrane, nuclear envelope, sisterchromatids,separation of sister chromatids, spindle fibers/microtubules,tetrad, homologous chromosomes, separation of homologouschromosomes, cleavage furrow.

  • What happens to the DNA during the interphase inpreparation for meiosis?

  • What happens to the DNA during the interphase betweenmeiosis I and II?

  • How do the daughter cells compare genetically to theparent cell after....

a) meiosis I?

b) meiosis II?

  • What is the diploid number for the species diagrammedabove? 2n =

What is the haploid number? n=

3. There are about 250 million molecules of hemoglobin in each red blood cell. Considering that all of the heme molecules are binding oxygen and that the red blood cell volume is about 0.1 pL, what is the concentration of O2 in a red blood cell? (For comparison, water at 37oC contains about 0.4 mM dissolved O2.) Please show work.

4. Cell Cycle (fill-in the blank with prophase, metaphase, anaphase, telophase, cytokinesis or stages of interphase (Growth 1, Synthesis, Growth 2). (some may be used more than once while others may not be used at all.)

__________ separation of sister chromatids (copied chromosomes)

__________ copied chromosomes align in the middle of the cell

__________ microtubule spindle forms

__________ nuclear membrane forms around chromatin

__________ separation of all cellular components into two different cells

__________ copied chromosomes condense

__________ duplication of DNA

__________ nuclear membrane breaks down