The Steps of Meiosis by https://padlet.com/craftyweaknessliteracy/csjhnsia1iy5cs1h Let's explore how cells divide to create reproductive cells through meiosis. en-us 2025-04-03 11:00:00 UTC 2025-04-03 17:03:29 UTC hello@padlet.com Step 1: Prophase I schwyhartshelby https://padlet.com/craftyweaknessliteracy/csjhnsia1iy5cs1h/wish/3394314982 The DNA starts to condense. Matching chromosomes pair (Homologous chromosomes) up and exchange genetic material. This is called 'crossing over' and it helps mix up our genetic material.

]]> 2025-04-03 11:00:01 UTC https://padlet.com/craftyweaknessliteracy/csjhnsia1iy5cs1h/wish/3394314982 Step 2: Metaphase I schwyhartshelby https://padlet.com/craftyweaknessliteracy/csjhnsia1iy5cs1h/wish/3394314985 The paired homologous chromosomes line up in the middle of the cell. They form a straight line right in the cell's center. Tiny protein strings (called spindle fibers) attach to each chromosome pair to help them move later.

]]> 2025-04-03 11:00:01 UTC https://padlet.com/craftyweaknessliteracy/csjhnsia1iy5cs1h/wish/3394314985 Step 3: Anaphase I schwyhartshelby https://padlet.com/craftyweaknessliteracy/csjhnsia1iy5cs1h/wish/3394314986 Time to separate! The homologous chromosomes are pulled away to opposite poles of the cell. Each end gets one chromosome from each pair.

]]> 2025-04-03 11:00:01 UTC https://padlet.com/craftyweaknessliteracy/csjhnsia1iy5cs1h/wish/3394314986 Step 4: Telophase I schwyhartshelby https://padlet.com/craftyweaknessliteracy/csjhnsia1iy5cs1h/wish/3394314990 The first division is almost done! The nuclear envelopes form around the separate chromosomes and the cell divides into two haploid cells.

]]> 2025-04-03 11:00:01 UTC https://padlet.com/craftyweaknessliteracy/csjhnsia1iy5cs1h/wish/3394314990 Step 5: Prophase II schwyhartshelby https://padlet.com/craftyweaknessliteracy/csjhnsia1iy5cs1h/wish/3394314994 After a short break, the second division begins! The chromosomes in each new cell condense again, and the nuclear envelope disintegrates. This time, they don't pair up or swap parts - they're ready to split differently!

]]> 2025-04-03 11:00:01 UTC https://padlet.com/craftyweaknessliteracy/csjhnsia1iy5cs1h/wish/3394314994 Step 6: Metaphase II schwyhartshelby https://padlet.com/craftyweaknessliteracy/csjhnsia1iy5cs1h/wish/3394314997 Just like in Metaphase I, the chromosomes line up in the middle of each new cell. But this time, they're not in pairs - each single chromosome lines up by itself.

]]> 2025-04-03 11:00:01 UTC https://padlet.com/craftyweaknessliteracy/csjhnsia1iy5cs1h/wish/3394314997 Step 7: Anaphase II schwyhartshelby https://padlet.com/craftyweaknessliteracy/csjhnsia1iy5cs1h/wish/3394314998 In anaphase II sister chromatids are pulled away to opposite poles of the cell.

]]> 2025-04-03 11:00:02 UTC https://padlet.com/craftyweaknessliteracy/csjhnsia1iy5cs1h/wish/3394314998 Step 7: Telophase II schwyhartshelby https://padlet.com/craftyweaknessliteracy/csjhnsia1iy5cs1h/wish/3394335957 Nuclear envelopes reform around the separated chromatids and the cells divide again.

]]> 2025-04-03 11:21:34 UTC https://padlet.com/craftyweaknessliteracy/csjhnsia1iy5cs1h/wish/3394335957 Cytokinesis schwyhartshelby https://padlet.com/craftyweaknessliteracy/csjhnsia1iy5cs1h/wish/3394337827 Four genetically unique haploid cells are formed after the cytoplasm divides.

]]> 2025-04-03 11:23:33 UTC https://padlet.com/craftyweaknessliteracy/csjhnsia1iy5cs1h/wish/3394337827 Comparing Mitosis and Meiosis schwyhartshelby https://padlet.com/craftyweaknessliteracy/csjhnsia1iy5cs1h/wish/3394349748 All though these two process are very similar they have some key differences:

  • Mitosis only divides once, Meiosis divides twice

  • Mitosis keeps the same number of chromosomes (46) vs Meiosis that only keeps half (23)

]]> 2025-04-03 11:35:27 UTC https://padlet.com/craftyweaknessliteracy/csjhnsia1iy5cs1h/wish/3394349748