Biology Chapter 9 terms pt1

Card Set Information

Author:
ndumas2
ID:
147522
Filename:
Biology Chapter 9 terms pt1
Updated:
2012-04-14 00:33:44
Tags:
Biology Chapter
Folders:

Description:
Biology Chapter 9 terms pt1
Show Answers:

Home > Flashcards > Print Preview

The flashcards below were created by user ndumas2 on FreezingBlue Flashcards. What would you like to do?


  1. one of several alternative forms of a particular gene.
    allele
  2. in mitosis, the stage in which the sister chromatids of each chromosome separate from one another and are moved to opposite poles of the cell; in meiosis I, the stage in which homologous chromosomes, consisting of two sister chromatids, are separated; in meiosis II, the stage in which the sister chromatids of each chromosome separate from one another and are moved to opposite poles of the cell.
    anaphase
  3. reproduction that does not involve the fusion of haploid gametes
    asexual reproduction
  4. a chromosome that occurs in homologous pairs in both males and females and that does not bear the genes determining sex.
    autosome
  5. the process by which a single bacterium divides in half, producing two identical offspring.
    binary fission
  6. the sequence of events in the life of a cell, from one cell division to the next.
    cell cycle
  7. splitting of one cell into two; the process of cellular reproduction.
    cell division
  8. in plant cell division, a series of vesicles that fuse to form the new plasma membranes and cell wall separating the daughter cells.
    cell plate
  9. in animal cells, a short, barrel-shaped ring consisting of nine microtubule triplets; a pair of centrioles is found near the nucleus and may play a role in the organization of the spindle; centrioles also give rise to the basal bodies at the base of each cilium and flagellum that give rise to the microtubules of cilia and flagella.
    centriole
  10. a mechanism in the eukaryotic cell cycle by which protein complexes in the cell determine whether the cell has successfully completed a specific process that is essential to successful cell division, such as the accurate replication of chromosomes.
    checkpoint
  11. a point at which a chromatid of one chromosome crosses with a chromatid of the homologous chromosome during prophase I of meiosis; the site of exchange of chromosomal material between chromosomes.
    chiasma
  12. one of the two identical strands of DNA and protein that forms a duplicated chromosome. The two sister chromatids of a duplicated chromosome are joined at the centromere.
    chromatid
  13. a DNA double helix together with proteins that help to organize and regulate the use of the DNA.
    chromosome
  14. offspring that are produced by mitosis and are, therefore, genetically identical to each other.
    clone
  15. the process of producing many identical copies of a gene; also the production of many genetically identical copies of an organism.
    cloning
  16. the exchange of corresponding segments of the chromatids of two homologous chromosomes during meiosis I; occurs at chiasmata.
    crossing over
  17. the division of the cytoplasm and organelles into two daughter cells during cell division; normally occurs during telophase of mitosis.
    cytokinesis
  18. one of the two cells formed by cell division
    daughter cell
  19. a molecule composed of deoxyribose nucleotides; contains the genetic information of all living cells.
    deoxyribonucleic acid (DNA)
  20. the process whereby a cell becomes specialized in structure and function.
    differentiate
  21. referring to a cell with pairs of homologous chromosomes.
    diploid
  22. a eukaryotic chromosome following DNA replication; consists of two sister chromatids joined at the centromeres.
    duplicated chromosome
  23. a haploid sex cell, usually a sperm or an egg, formed in sexually reproducing organisms.
    gamete
  24. the unit of heredity; a segment of DNA located at a particular place on a chromosome that encodes the information for the amino acid sequence of a protein and, hence, particular traits.
    gene
  25. referring to a cell that has only one member of each pair of homologous chromosomes.
    haploid
  26. a chromosome that is similar in appearance and genetic information to another chromosome with which it pairs during meiosis; also called homologue.
    homologous chromosome
  27. a chromosome that is similar in appearance and genetic information to another chromosome with which it pairs during meiosis;
    homologue, also called homologous chromosome.
  28. the stage of the cell cycle between cell divisions in which chromosomes are duplicated and other cell functions occur, such as growth, movement, and acquisition of nutrients.
    interphase
  29. a preparation showing the number, sizes, and shapes of all of the chromosomes within a cell.
    karyotype
  30. a protein structure that forms at the centromere regions of chromosomes; attaches the chromosomes to the spindle.
    kinetochore

What would you like to do?

Home > Flashcards > Print Preview