{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Problem Set 4 2010 - Problem Set 4 Chapters 12-15 BILD1...

Info icon This preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Problem Set 4 BILD1 / Winter 2010 Chapters 12-15 Traver 1 The Cell Cycle / Mitosis 1) Starting with a fertilized egg (zygote), a series of five cell divisions would produce an early embryo with how many cells? 2) A chicken has 78 chromosomes in its somatic cells. How many chromosomes did the chicken inherit from each parent? How many chromosomes are in each of the chicken’s gametes? How many chromosomes will be in each somatic cell of the chicken’s offspring? How many chromosomes are in a set? 3) What is the name for the special region on a duplicated chromosome that holds the sister chromatids together? A) centrosome B) centromere C) kinetochore D) desmosome E) microtubule organizer region 4) If there are 20 chromatids in a cell, how many centromeres are there? The questions below refer to the following terms. Each term may be used once, more than once, or not at all. A. telophase B. anaphase C. prometaphase D. metaphase E. prophase 5) Two centrosomes are arranged at opposite poles of the cell. 6) Centrioles begin to move apart in animal cells. 7) This is the longest of the mitotic stages. 8) Centromeres uncouple, sister chromatids are separated, and the two new chromosomes move to opposite poles of the cell.
Image of page 1

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

View Full Document Right Arrow Icon
Problem Set 4 BILD1 / Winter 2010 Chapters 12-15 Traver 2 The top circle in figure below shows a diploid nucleus with four chromosomes. There are two pairs of homologous chromosomes, one long and the other short. One haploid set is symbolized as black and the other haploid set is gray. The chromosomes in the top circle have not yet replicated. Choose the correct chromosomal conditions for the following stages. 9) at prometaphase of mitosis 10) one daughter nucleus at telophase of mitosis 11) Taxol is an anticancer drug extracted from the Pacific yew tree. In animal cells, taxol disrupts microtubule formation by binding to microtubules and accelerating their assembly from the protein precursor, tubulin. Surprisingly, this stops mitosis. Specifically, taxol must affect:
Image of page 2
Image of page 3
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