PPT-Meiotic Cell Division

Obectives Describe the result of meiotic division in terms of sexual reproduction Discuss the structure of homologous chromosomes Describe chromosomes in terms of ploidy Distinguish between sexual and asexual reproduction. Chromosome number. Phases of meiosis. Meiosis and genetics. Gamete formation. Comparing mitosis and meiosis. Chromosome number. A cell in adult . drosphilia. (fruit fly) has 8 chromosomes, 4 of which came from the fly’s male parent, and 4 of which came from the fly’s female parent.. EQ: How do cells divide? . Cell Division . —. . process by which . a cell divides into 2 new cells. Why do cells need to divide? . Living things grow by producing more cells, NOT because each cell increases in size. Alabama State University, Math, Science Partnership, . Summer 2013. CROSSING OVER. When does it occur?. Why is it important?. Meiosis in Lily. In Mitosis the cell’s . chromosomes . are replicated so that when nuclear division occurs followed by cytoplasmic division the two new . Cell Division . —. . process by which a cell divides into . 2 new cells. Why do cells need to divide? . Living things . grow. by producing . more cells. , NOT because each cell increases in size. Chapter 10. In Your Notebook. Materials move through cells by diffusion. Oxygen and food move . into cells. , while waste products move out of cells. How does the size of . a cell . affect how . efficiently . Figure 12.1b The functions of cell division: Growth and development. Figure 12.1c The functions of cell division: Tissue renewal. Figure 12.2 Eukaryotic chomosomes. Figure 19.0 Chromatin in a developing salamander ovum. 1. Grab the chromosomes from the. parent cell . to fill in the other steps in mitosis, including . DNA replication. , . cell division. and the resulting two . daughter cells. . . 2. Answer the question below and move to the next slide.. Chapters 12, 13, 16, 17. Limits to Cell Growth. The larger a cell becomes, the more demands a cell places on its DNA. If extra copies of DNA are not made, an “information crisis” would occur. The cell also has more trouble moving nutrients and wastes across the cell membrane. meiotic drivers are ultra-sel
shalleles that bias their transmission bydestroying meiotic products that donot inherit them.Meiotic drivers have been found in awide range of eukaryotes but arenotoriou Acknowledgement. I would like to express special thank of gratitude to our respected principal madam, Mrs. . Kuljit. . Kaur. , for giving us this unique opportunity to express ourselves in a creative way. : is the changes which occur in the cell during its division (mitosis) and during its rest (interphase).. OR . sequence of phases in the life cycle of the cell. 3- . Unicellular organisms. cell division = reproduction. Multicellular organisms. cell div. needed for development. & for reproduction (meiosis). Mitosis gives each cell. complete set of genetic material. mitosis. results in an increase in number of . identical. cells for . growth and repair. .. Identify and name the stages of mitosis in diagrams and photomicrographs.. Describe the . cell cycle. and relate it to an understanding of . 1. Cell division. Mitosis. Cell division functions in reproduction, growth, and repair. In unicellular organisms, the division of one cell to form two reproduces . an entire . organism (e.g., bacteria, yeast, .