Snurfle Meiosis Go to this website: http://bit.ly/2MTxbrx Click on Start a New Game Click on Continue Click on Continue Click on Meiosis Interactive and then go to Genetics Interactive and follow the following questions. 1. When does interphase occur? 2. What occurs during interphase? 3. Uncoiled stringy DNA is called 4. Human cells have pieces of chromatin. 5. Half of your DNA comes from your 6. DNA has 7. Different forms of a gene are called 8. What are the 2 alleles for fur color in Snurfles and which letters represent those alleles? 9. Meiosis is when DNA copies itself and it occurs during 10. Gametes are made during Meiosis. Examples of gametes are 11. Meiosis occurs in 12. List the phases for Meiosis I. 13. List the phases for Meiosis II. 14. During prophase I the chromosomes 15. Chromosomes that are the same size and have the same genes are called 16. Each half of a replicated chromosome is called a 17. Sister chromatids of a chromosome are 18. The nucleus disappears during prophase I. 19. Homologous chromosomes pair up during prophase I to form a 20. During metaphase I the tetrads line up in the middle of the cell. 21. The homologous chromosomes split up and move toward the opposite ends of the cell during 22. Two independent cells begin to form during 23. Cytokinesis is the division of the cytoplasm to make two new cells. 24. The 2 new cells that are formed from Meiosis I are haploid and contain half of the chromosomes of the original cell that started meiosis. 25. At the start of Meiosis I you had 1 diploid cell. 26. Meiosis II must take place because each of our new cells still has too much DNA. 27. Draw the chromosomes in
The Correct Answer and Explanation is:
Snurfle Meiosis Interactive Answers
- When does interphase occur?
Before meiosis begins. - What occurs during interphase?
The cell performs normal activities, such as making proteins. - Uncoiled stringy DNA is called:
Chromatin. - Human cells have ___ pieces of chromatin:
46. - Half of your DNA comes from your:
Mother; and half from your father. - DNA has ___ that determine traits of an organism:
Genes. - Different forms of a gene are called:
Alleles. - What are the two alleles for fur color in Snurfles and which letters represent those alleles?
Yellow (G) and green (g). - DNA copies itself during:
Interphase. - Gametes are made during meiosis. Examples of gametes are:
Sperm and eggs. - Meiosis occurs in:
Two divisions: Meiosis I and Meiosis II. - Phases of Meiosis I:
Prophase I, Metaphase I, Anaphase I, Telophase I. - Phases of Meiosis II:
Prophase II, Metaphase II, Anaphase II, Telophase II. - During prophase I, the chromosomes:
Condense and become X-shaped. - Chromosomes that are the same size and have the same genes are called:
Homologous chromosomes. - Each half of a replicated chromosome is called a:
Chromatid. - Sister chromatids of a chromosome are:
Identical copies. - The nucleus disappears during:
Prophase I. - Homologous chromosomes pair up during prophase I to form a:
Tetrad. - During metaphase I, the tetrads line up in the:
Middle of the cell. - The homologous chromosomes split up and move toward opposite ends of the cell during:
Anaphase I. - Two independent cells begin to form during:
Telophase I. - Cytokinesis is the division of the cytoplasm to make two new cells:
True. - The two new cells formed from Meiosis I are haploid and contain half of the chromosomes of the original cell that started meiosis:
True. - At the start of Meiosis I, you had:
One diploid cell. - Meiosis II must take place because:
Each of our new cells still has too much DNA. - Draw the chromosomes in Meiosis I and label the cells as diploid or haploid:
[As this is a text-based medium, please refer to the Snurfle Meiosis Interactive for visual representation.]
Explanation
Meiosis is a specialized form of cell division that reduces the chromosome number by half, resulting in the production of haploid gametes—sperm and egg cells. This process is essential for sexual reproduction, ensuring genetic diversity and stability across generations.
The process begins with interphase, during which the cell grows, performs normal functions, and duplicates its DNA, resulting in chromosomes composed of two sister chromatids. Meiosis comprises two consecutive divisions: Meiosis I and Meiosis II.
In Meiosis I, homologous chromosomes pair up during prophase I, forming tetrads, and exchange genetic material through crossing over. This recombination increases genetic variability. During metaphase I, these tetrads align at the cell’s equator, and in anaphase I, homologous chromosomes are pulled to opposite poles. Telophase I and cytokinesis follow, resulting in two haploid cells, each with half the original chromosome number.
Meiosis II resembles mitosis, where the sister chromatids within the haploid cells are separated. This division ensures that each of the four resulting gametes has a single set of chromosomes. These gametes are genetically distinct due to the earlier recombination events.
Understanding meiosis is crucial in genetics and biology, as it explains how traits are inherited and how genetic variation arises. The Snurfle Meiosis Interactive provides a visual and interactive means to grasp these complex processes, reinforcing the concepts through engaging activities.
