reproduction in cells. one parent creates clones parent gives entire genetic make-up to offspring...
TRANSCRIPT
![Page 1: Reproduction in Cells. One parent Creates clones Parent gives entire genetic make-up to offspring Examples: Binary Fission – Prokaryotes Mitotic Cell](https://reader034.vdocuments.us/reader034/viewer/2022042718/56649f335503460f94c4f993/html5/thumbnails/1.jpg)
Reproduction in Cells
![Page 2: Reproduction in Cells. One parent Creates clones Parent gives entire genetic make-up to offspring Examples: Binary Fission – Prokaryotes Mitotic Cell](https://reader034.vdocuments.us/reader034/viewer/2022042718/56649f335503460f94c4f993/html5/thumbnails/2.jpg)
• One parent• Creates clones• Parent gives entire genetic make-up to
offspring
Examples:Binary Fission – ProkaryotesMitotic Cell Division - Eukaryotes
Asexual Reproduction
![Page 3: Reproduction in Cells. One parent Creates clones Parent gives entire genetic make-up to offspring Examples: Binary Fission – Prokaryotes Mitotic Cell](https://reader034.vdocuments.us/reader034/viewer/2022042718/56649f335503460f94c4f993/html5/thumbnails/3.jpg)
Mitotic Cell Division in Eukaryotes
• Budding• Fragmentation• Vegetative Reproduction• Unfertilized eggs
![Page 4: Reproduction in Cells. One parent Creates clones Parent gives entire genetic make-up to offspring Examples: Binary Fission – Prokaryotes Mitotic Cell](https://reader034.vdocuments.us/reader034/viewer/2022042718/56649f335503460f94c4f993/html5/thumbnails/4.jpg)
Sexual Reproduction• Two parents contribute equal # of chromosomes• To do this need non-somatic cells– Gametes = reproductive cells (sperm and eggs)• Produced by Meiosis• Haploid cells (n)
– Have 1 full set of chromosomes
• Fertilization creates a diploid cell (2n)– Have 2 full sets of chromosomes– homologous pairs = chromsomes have same sstructure and genes
![Page 5: Reproduction in Cells. One parent Creates clones Parent gives entire genetic make-up to offspring Examples: Binary Fission – Prokaryotes Mitotic Cell](https://reader034.vdocuments.us/reader034/viewer/2022042718/56649f335503460f94c4f993/html5/thumbnails/5.jpg)
Questions• A cell has a diploid number of 16, what is the
haploid number?• A cell that has 12 chromosomes is going to
divide to produce cells for sexual reproduction. How many chromosomes will the sex cells have?
• An egg cell for a certain species has 20 chromosomes. How many chromosomes will it have after it is fertilized?
![Page 6: Reproduction in Cells. One parent Creates clones Parent gives entire genetic make-up to offspring Examples: Binary Fission – Prokaryotes Mitotic Cell](https://reader034.vdocuments.us/reader034/viewer/2022042718/56649f335503460f94c4f993/html5/thumbnails/6.jpg)
Meiosis Review Activity
![Page 7: Reproduction in Cells. One parent Creates clones Parent gives entire genetic make-up to offspring Examples: Binary Fission – Prokaryotes Mitotic Cell](https://reader034.vdocuments.us/reader034/viewer/2022042718/56649f335503460f94c4f993/html5/thumbnails/7.jpg)
Meiosis
![Page 8: Reproduction in Cells. One parent Creates clones Parent gives entire genetic make-up to offspring Examples: Binary Fission – Prokaryotes Mitotic Cell](https://reader034.vdocuments.us/reader034/viewer/2022042718/56649f335503460f94c4f993/html5/thumbnails/8.jpg)
Prophase I• Chromosomes condense• Homologous pairs move together– Crossing over occurs (exchange of DNA between
homologous chromosomes) allows genetic recombination and variation among species
![Page 9: Reproduction in Cells. One parent Creates clones Parent gives entire genetic make-up to offspring Examples: Binary Fission – Prokaryotes Mitotic Cell](https://reader034.vdocuments.us/reader034/viewer/2022042718/56649f335503460f94c4f993/html5/thumbnails/9.jpg)
Metaphase I• Pairs move to center of
the cell (metaphase plate)
Anaphase I•Homologous pairs separate
![Page 10: Reproduction in Cells. One parent Creates clones Parent gives entire genetic make-up to offspring Examples: Binary Fission – Prokaryotes Mitotic Cell](https://reader034.vdocuments.us/reader034/viewer/2022042718/56649f335503460f94c4f993/html5/thumbnails/10.jpg)
Telophase I• Homologous chromosomes are completely
separated
• Cytoplasm splits into two cells (cytokinesis)• Haploid (n) cells
![Page 11: Reproduction in Cells. One parent Creates clones Parent gives entire genetic make-up to offspring Examples: Binary Fission – Prokaryotes Mitotic Cell](https://reader034.vdocuments.us/reader034/viewer/2022042718/56649f335503460f94c4f993/html5/thumbnails/11.jpg)
![Page 12: Reproduction in Cells. One parent Creates clones Parent gives entire genetic make-up to offspring Examples: Binary Fission – Prokaryotes Mitotic Cell](https://reader034.vdocuments.us/reader034/viewer/2022042718/56649f335503460f94c4f993/html5/thumbnails/12.jpg)
Prophase II• Spindle forms• No more crossing over• Chromosomes move towards metaphase
plate
![Page 13: Reproduction in Cells. One parent Creates clones Parent gives entire genetic make-up to offspring Examples: Binary Fission – Prokaryotes Mitotic Cell](https://reader034.vdocuments.us/reader034/viewer/2022042718/56649f335503460f94c4f993/html5/thumbnails/13.jpg)
Metaphase II• Chromosomes line up
in the middle of the cell
Anaphase II• Chromosomes split and move to opposite sides of the cell
![Page 14: Reproduction in Cells. One parent Creates clones Parent gives entire genetic make-up to offspring Examples: Binary Fission – Prokaryotes Mitotic Cell](https://reader034.vdocuments.us/reader034/viewer/2022042718/56649f335503460f94c4f993/html5/thumbnails/14.jpg)
Telophase II• Chromosomes at opposite sides of the cell• Nucleus reforms• Cells divide (cytokinesis)– Four haploid gamete cells
![Page 15: Reproduction in Cells. One parent Creates clones Parent gives entire genetic make-up to offspring Examples: Binary Fission – Prokaryotes Mitotic Cell](https://reader034.vdocuments.us/reader034/viewer/2022042718/56649f335503460f94c4f993/html5/thumbnails/15.jpg)