Download Meiosis Tutorial - williamryancook

Meiosis Tutorial
www.biology.arizona.edu
Go to cell biology  meiosis  meiosis I. Read through the introduction. Read through this information
carefully. (You may want to take notes or print a copy (from home) to keep in your notes.) You do not
need to be familiar with the information on mutations…yet . Note that this review does not use the word
tetrads to describe the synapsis of homologous chromosomes  it uses bivalents.
Click on the Next button until you reach the problem set.
Problem 1: Number of chromosomes
A human cell has 46 total or 23 pairs of chromosomes. Following mitosis, the daughter cells would each
have a total of ______ chromosomes. After meiosis I, the two daughter cells would have _____
chromosomes, and after meiosis II ______ chromosomes.
When is the chromosome number reduced to ½? _______________________________________
Problem 2: Four different cells
The process of meiosis produces four cells with non-identical chromosomes. This diversification occurs
during: ____________________________________________________________________________
Problem 3: Mitosis vs. Meiosis
Which of the following is unique to mitosis and not a part of meiosis?_____________________________
SKIP PROBLEM 4 (Instead of answering, choose the problem 5 button at the bottom.)
Problem 5: Asexual vs. sexual reproduction
Some organisms are capable of asexual or sexual reproduction. Under favorable conditions, reproduction
proceeds asexually. When conditions become more stressful reproduction switches to a sexual mode. Why?
_________________________________________________________
Problem 6: Haploid cells
The stage of meiosis where cells become haploid. ____________________________________________
Problem 7: Events of Meiosis
One of the earliest events that distinguishes meiosis occurs in prophase I and involves:
_________________________________________________________
This allows _________________________________ to occur which gives way to genetic variation.
Problem 8: Ocean coral
Coral in the ocean grows by budding, where the new organism grows out of the old one by mitosis. This
form of replication is an example of: _____________________________________________
The advantage of this is the ______________ __________________ of organisms that can be produced.
The disadvantage is that there is no __________________ ____________________ among the offspring.
Problem 9: Phases of Meiosis
_______________________________________most closely resembles events of mitosis except that the
cells are ____________________________________________.