Name _________________________________________________ HR____
MEIOSIS VIRTUAL LAB
http://anthro.palomar.edu/biobasis/bio_2.htm
1. Define spermatogenesis.
___________________________________________________
________________________________________________________________________
Below the diagram click on the “how cells divide” box ***Under the Meiosis
description
2. How many chromosomes does an egg or sperm contain? _____
click on the non-flash version of Mitosis vs. Meiosis – click through each of the 14 tabs
and answer the following questions
3. The cells of meiosis will divide _________, resulting in ______ cells.
4. What is the difference during Interphase of mitosis and Interphase I of meiosis? _____
________________________________________________________________________
5. In prophase I, each chromosome pairs up with its corresponding chromosome. Where
do you think the corresponding chromosomes come from? ________________________
6. Sketch a cell in metaphase of mitosis and metaphase I of meiosis below
7. What is the main difference between anaphase of mitosis and anaphase I of meiosis?
________________________________________________________________________
8. In interphase II of meiosis, why do you think chromosomes don’t duplicate as they did
in interphase I? ___________________________________________________________
9. What is difference between metaphase I and metaphase II of meiosis? _____________
________________________________________________________________________
10. At the end of meiosis, this cell ends up with _____ chromosomes when it started
with ____ chromosomes.
http://biology.clc.uc.edu/Courses/bio104/meiosis.htm
11. A chromosomal pair is referred to as _________________________________
12. Define diploid and how is it abbreviated ____________________________________
________________________________________________________________________
13. Define haploid and how is it abbreviated ___________________________________
________________________________________________________________________
14. In humans, would 22 + X be a haploid or diploid number? _____________________
15. What is unique about prophase I in females? ________________________________
________________________________________________________________________
________________________________________________________________________
16. How many possible chromosome combinations could a sperm or egg have?
_____________. How many genetically different children could a couple have? _______
17. Using what you know, how many chromosome combinations could the sperm of a
fruit fly have if their diploid number is 12? _____________________________________
Look for this website…..
http://dwb.unl.edu/Teacher/NSF/C08/C08Links/wsrv.clas.virginia.edu/~rjh9u/meios
isx.html
25. During which stage does crossing over occur? _____________________
26. True or False. Crossing over occurs on homologous chromosomes?
http://www.phschool.com/science/biology_place/biocoach/meiosis/teloi.html
using the menu on the left go through concepts #1-14, doing the practice pages
(upper right corner) on concepts #10-13
http://www.execulink.com/~ekimmel/biofax14.htm
take this quiz and record your score here _____
(leave all boxes unchecked)
Must get 100% & TEACHER SIGN OFF________
QUESTIONS:
1. What is the purpose/reason a cell would go through Meiosis?
2. What is the purpose/reason a cell would go through Mitosis?
3. Describe how Mitosis and Meiosis are the same…..
Describe how they are different from each other….