Mitosis and Meiosis- Gwen and Mykela

Mitosis and Meiosis

Mitosis is a process that works to regulate growth and development, reproduction, and tissue renewal within the body. Meiosis is a process that works to increase genetic diversity of the offspring of two organisms. These processes are controlled by a sequence of chemical signals called the cell cycle. Mitosis occurs in somatic cells. Two parent cells are produced as a result of mitosis. Meiosis occurs in non-somatic "body cells", otherwise known gametes. Meiosis produces four cells with haploid sets of chromosomes.

Investigation 7

There are several objectives in this lab:

* "To describe the events in the cell cycle and how these events are controlled

* To explain how DNA is transmitted to the next generation via mitosis

* To explain how DNA is transmitted to the next generation via meiosis followed by fertilization

* To understand how meiosis and crossing over leads to increased genetic diversity, which is necessary for evolution"

There are several investigations in this lab:

* Part 1:Modeling Mitosis- Use pop beads to demonstrate the steps of mitosis

* Lab 3: Mitosis & Meiosis- Oberse onion root tip and fish blastodisc under microscope and draw observations. Complete the chart for Lab 3. Record amount of cells in each phase in table for Lab 3.

* Part 2: Compute the Chi-square value of the data using the values in the table.

* Magnetic Karyotype- Pair matching chromosomes together in order from longest to shortest and identify the genetic disorder and gender

* HeLa Cells- Answer prelab questions.

* Modeling Meiosis- use pop beads to demonstrate meiosis I and II.

* Meiosis and Crossing Over in Sordaria- Count all instances of crossing over in asci (2 cards worth)

Data/Tables

Lab 3: Mitosis and Meiosis



Part 2: Chi-Square



Part 5: Crossing Over in Sordaria



Example Chi-Square Problem

In humans, left-handedness is recessive to right-handedness. Caulculate the Chi-Square value if 106 people are right handed and 44 people are left-handed.

Mitosis and Meiosis Applications (Genetics, Cellular Communication, Growth and Development)

Mitosis is regulated with chemical signals in the cytoplasm of a cell. Cellular communication is essential for mitosis. Meiosis increases genetic diversity of offspring through the process of crossing-over. Finally, mitosis is a process that regulates growth and development within multicellular organisms.

Quizlet Link

https://quizlet.com/82044752/mitosis-and-meiosis-lab-presentations-flash-cards/

Chi- Square Answer- 25.61