H aploid cells have h alf of the number of

Info icon This preview shows pages 2–7. Sign up to view the full content.

View Full Document Right Arrow Icon
H aploid cells Have h alf of the number of chromosomes (n); Cells used in sexual reproduction, sperm and ova (also known as gametes or germ cells) Diploid cells contain two complete sets (2n) of chromosomes; examples are skin, blood, muscle cells (also known as somatic cells ) Chromatid Half of a duplicated chromosome. One of two “sister” parts, makes half of the “X”;
Image of page 2

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Synapsis The pairing between two homologous chromosomes; The act of lining up side by side by homologous chromosomes during the meiotic phase of cell division Spindle fiber Help separate the chromosomes. Fan shaped structure made of microtubules. . Interphase Part of the cell cycle when the cell is not dividing 3 parts: G1 –phase of the cell cycle after cell division, growth and day to day life of a cell. S Phase –Replication or synthesis of DNA and associated proteins that happens before cells divide. G2 –Phase of the cell cycle when cells prepare for cell division by making more organelles and cytoplasm. Mitosis Summary a process of cell division in which the parent cell makes two new daughter cells, each with the same number of chromosomes as the parent.
Image of page 3
Meiosis Summary 2 divisions Result = 4 daughter cells with half the chromosome number of the parent cell
Image of page 4

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Comparison of Mitosis and Meiosis
Image of page 5
HOW ARE THESE PROCESSES DIFFERENT? Sources of Genetic Variation crossing over of homologous chromosomes the random alignment of the chromosomes during metaphase I (independent assortment) the combination of sperm and egg genes (random fertilization).
Image of page 6

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Diploid Haploid About: Diploid cells contain two complete sets (2n) of chromosomes. Haploid cells have half the number of chromosomes (n) as diploid - i.e. a haploid cell contains only one complete set of chromosomes. Cell Division and Growth: Diploid cells reproduce by mitosis making daughter cells that are exact replicas. Haploid cells are a result of the process of meiosis, a type of cell division in which diploid cells divide to give rise to haploid germ cells. A haploid cell will merge with another haploid cell at fertilization. Examples: Skin, blood, muscle cells (also known as somatic cells ) Cells used in sexual reproduction, sperm and ova (also known as Gametes).
Image of page 7
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern