BIOL 207 - 1

Card Set Information

Author:
ebacker
ID:
172928
Filename:
BIOL 207 - 1
Updated:
2012-09-24 00:24:53
Tags:
BIOL 207
Folders:

Description:
Mitosis, Meiosis, and Life Cycles
Show Answers:

Home > Flashcards > Print Preview

The flashcards below were created by user ebacker on FreezingBlue Flashcards. What would you like to do?


  1. What is a cohesin/ what does it do?
    • Protein Ring - 3 proteins
    • Holds sister chromatids together
    • Formed before the chromatids

  2. What are the jobs of a cetromere?
    • Where cohesin is found
    • Where microtubules are found
  3. What is the order of a Eukaryotic cell cycle?
    • Interphase:
    • G1
    • S (DNA Synth)
    • G2

    • Mitotic Phase:
    • Mitosis
    • Cytokinesis
  4. Haploid
    • One chromosome set
    • Ex. Gametes
  5. Diploid
    • Two chromosome sets
    • Ex. Embryo to adult
  6. ______ begins with the breakdown of the cohesin proteins rings.
    Anaphase
  7. How many chormosomes are in human haploid and diploid cells?
    n = 23

    2n = 46
  8. What is the amount of DNA called?
    c value
  9. What is the amount of DNA in: gametes, typical cells at G1, typical cells at G2?
    c = 3100 Mb

    2c = 6200 Mb

    4c = 12400 Mb
  10. Define Genome
    Number of genes in a haploid cell
  11. Name the mechanism responsible for each of the following:
    1. 2n -> 2n
    2. n -> n
    3. n -> 2n
    4. 2n -> n
    • 1. Mitosis
    • 2. Mitosis
    • 3. Fertilization
    • 4. Meiosis
  12. Meiosis in females is...
    Oogenesis
  13. Describe oogenesis
    2n --meiosis--> n + n + n + n

    3 n's are disposed of to create one large oocyte
  14. Meiosis in males is...
    Spermatogenesis
  15. Describe spermatogenesis
    2n --meiosis--> n + n + n + n --differentiation (flagella)--> n~ + n~ + n~ + n~

    • n = spermatids
    • n~ = sperm
  16. Draw a typical human life cycle. (Or describe in words)
  17. What is double fertilization?
    Form of fertilization in angiosperms.

    • 2 sperm enter egg
    • 1 sperm fertilizes egg = diploid zygote
    • 1 sperm combines with 2 polar nuclei = triploid nucleus

    Triploid nucleus becomes endosperm = food for embryo
  18. What is yeast "fertilization" called, and why is it not called fertilization?
    Cell & Nuclear Fusion

    2 cells of equal size coming together not 1 big and 1 small
  19. What is unequal cell division in yeast called?
    Budding
  20. What are the differences between animals, plants, and fungi inregards to sexes, haploid cell reproduction, and n -> 2n? (Table)

What would you like to do?

Home > Flashcards > Print Preview