Sign In
Ask Question
Desmond Keller
Biology
16 December, 10:19
What are differences between meiosis and mitosis?
+1
Answers (
1
)
Alexis Ayers
16 December, 10:25
0
Differences Between Mitosis and Meiosis
1. Cell Division
Mitosis: A somatic cell divides once. Cytokinesis (the division of the cytoplasm) occurs at the end of telophase. Meiosis: A reproductive cell divides twice. Cytokinesis happens at the end of telophase I and telophase II.
2. Daughter Cell Number
Mitosis: Two daughter cells are produced. Each cell is diploid containing the same number of chromosomes. Meiosis: Four daughter cells are produced. Each cell is haploid containing one-half the number of chromosomes as the original cell.
3. Genetic Composition
Mitosis: The resulting daughter cells in mitosis are genetic clones (they are genetically identical). No recombination or crossing over occur. Meiosis: The resulting daughter cells contain different combinations of genes. Genetic recombination occurs as a result of the random segregation of homologous chromosomes into different cells and by the process of crossing over (transfer of genes between homologous chromosomes).
4. Length of Prophase
Mitosis: During the first mitotic stage, known as prophase, chromatincondenses into discrete chromosomes, the nuclear envelope breaks down, and spindle fibers form at opposite poles of the cell. A cell spends less time in prophase of mitosis than a cell in prophase I of meiosis. Meiosis: Prophase I consists of five stages and lasts longer than prophase of mitosis. The five stages of meiotic prophase I are leptotene, zygotene, pachytene, diplotene, and diakinesis. These five stages do not occur in mitosis. Genetic recombination and crossing over take place during prophase I.
5. Tetrad Formation
Mitosis: Tetrad formation does not occur. Meiosis: In prophase I, pairs of homologous chromosomes line up closely together forming what is called a tetrad. A tetrad consists of four chromatids (two sets of sister chromatids).
6. Chromosome Alignment in Metaphase
Mitosis: Sister chromatids (duplicated chromosome comprised of two identical chromosomes connected at the centromere region) align at the metaphase plate (a plane that is equally distant from the two cell poles). Meiosis: Tetrads (homologous chromosome pairs) align at the metaphase plate in metaphase I.
7. Chromosome Separation
Mitosis: During anaphase, sister chromatids separate and begin migrating centromere first toward opposite poles of the cell. A separated sister chromatid becomes known as daughter chromosome and is considered a full chromosome. Meiosis: Homologous chromosomes migrate toward opposite poles of the cell during anaphase I. Sister chromatids do not separate in anaphase I.
Comment
Complaint
Link
Know the Answer?
Answer
Not Sure About the Answer?
Find an answer to your question 👍
“What are differences between meiosis and mitosis? ...”
in 📗 Biology if the answers seem to be not correct or there’s no answer. Try a smart search to find answers to similar questions.
Search for Other Answers
You Might be Interested in
Pepsin is an enzyme secreted in our stomach. Explain why pepsin would not function in the small intestine, which has a pH of 8.
Answers (1)
If a ramp to the top of a 30 meter building at a construction site has a mechanical advantage of 4, how long must the ramp be?
Answers (1)
Whole animal cloning puts a nucleus from a cell of one animal into A. the chromosome of a bacterium. B. the plasmid of a bacterium. C. an egg cell from another animal. D. a sperm cell from another animal.
Answers (2)
Which of the following types of electromagnetic radiation has the shortest frequency Infrared Waves Microwaves Ultraviolet Waves X-rays
Answers (1)
What is the outcome of meiosis
Answers (2)
New Questions in Biology
Which statement best describes the relationship between activation energy and rate of reaction? O Increasing the activation energy can increase the rate of a reaction. O Reducing the activation energy can increase the rate of a reaction.
Answers (2)
Definition: this is a haploid cell with half the reproductive information from the parent.
Answers (1)
Does a cell use energy when molecules diffuse in or out of the cell? Why?
Answers (1)
Below is a list of possible challenges. Check all errors that you mentioned in your answer. Traits other than beak type might affect natural selection. It could take many generations to observe adaptions to a population.
Answers (1)
A farmer dug a well but did not find any water Which reasons most likely explain why the farmer did not find water? Check all that apply.
Answers (2)
Home
»
Biology
» What are differences between meiosis and mitosis?
Sign In
Ask Question
Menu
Calculator
Subjects
History
English
Mathematics
Biology
Physics
Chemistry
Geography
Social Studies
Business
Law
Arts
SAT
Advanced Placement (AP)
Computers & Technology
Engineering
Sign In
close
Sign In
Sign Up
Forgot Password?