chromosomes, mitosis, and meiosis 6.1. karyotype – image of all the chromosomes in a cell...
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Chromosomes, Mitosis, and Meiosis6.1
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Karyotype – Image of all the chromosomes in a cell
Autosomes – Chromosomes 1-22
Sex Chromosomes – #23
Homologous chromosomes – pair of matching chromosomes
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Somatic cells
Gametes
-Body cells
-Reproductive cells
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Life Cycle of a cell
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Mom gave
Dad gaveChromatid 1 Chromatid 2
You
Interphase
Mitosis Meiosis
Asexual reproduction: identical cells
Involved in Sexual reproduction:
Produces genetically unique cells
Results in Diploid cells
Results in Haploid cells
Diploid Cell – Cell that has 2 copies of each chromosome (2n).
Haploid Cell – Cell that has 1 copy of each chromosome (n).
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Spermatogonia• Diploid cells in testies of
males produce sperm
Oogonia• Diploid cells in ovary of
females make eggs
Meiosis
“Houston, we have touchdown”
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Zygote- A fertilized egg
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Please leave the lab in the bag.Thank you
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Teacher
• Using whiteboards and chromosome beads. Ask questions and have 1 student draw and hold up board. Other represent with beads.
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12. What process is this
Meiosis
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13. What is another name for asexual reproduction
Mitosis
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14. Draw a Diploid cell showing chromosome 1 inside it.
2n
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15. Draw a Haploid cell showing chromosome 1 inside it.
n
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16. What is produced when an egg and a sperm combine?
Zygote
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17. What is meiosis called when it occurs in females?
Oogonia
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18. How many chromosomes does a human have?
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19. Draw Meiosis using chromosome 1 and 2
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20. Using only 1 chromosome, draw a picture of a Karyotype for a diploid cell.