Kompetensi Setelah mempelajari siklus sel dan pembelahan sel mhs diharapkan: mengetahui arti penting pembelahan sel memahami konsep dan tahapan dalam siklus sel mengetahui proses pembelahan sel dan tahap- tahap pembelahan sel (Mitosis dan Meiosis) Mhs mengetahui persamaan & perbedaan ke-2 pembelahan tsb Mhs mengetahui mengapa tjd variasi genetik pd peristiwa meiosis Siklus Sel & Mitosis - Eva
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Kompetensi
Setelah mempelajari siklus sel dan pembelahan sel mhs diharapkan:
mengetahui arti penting pembelahan sel
memahami konsep dan tahapan dalam siklus sel
mengetahui proses pembelahan sel dan tahap-tahap pembelahan sel (Mitosis dan Meiosis)
Mhs mengetahui persamaan & perbedaan ke-2 pembelahan tsb
Mhs mengetahui mengapa tjd variasi genetik pd peristiwa meiosis
Siklus Sel & Mitosis - Eva
SIKLUS DAN PEMBELAHAN SEL
Siklus Sel & Mitosis - Eva
Starting at the beginning…
Biologically speaking, where did YOU come from?
Siklus Sel & Mitosis - Eva
Cells
How many cells make up a human body?
Did you have the same number last year? What about when you were 2 years old? 2 months old?
Siklus Sel & Mitosis - Eva
Cells
Your body is made up of between 10 and 100 trillion cells. (100,000,000,000,000)
One-thousandth of them die every day
Siklus Sel & Mitosis - Eva
Cells Where do all these cells come from?
Siklus Sel & Mitosis - Eva
Cellular Reproduction
New cells are made from copies of old cells
Siklus Sel & Mitosis - Eva
Organisme uniseluler
Melakukan reproduksi melalui pembelahan sel (mitosis; binary fission)
100 µm
(a) Reproduction. An amoeba, a single-
celled eukaryote, is dividing into two
cells. Each new cell will be an individual
organism (LM).
Siklus Sel & Mitosis - Eva
Binary Fission pd Prokariot
1 2
Siklus Sel & Mitosis - Eva
3 4
Tujuan pembelahan sel pd organisme multiseluler
◦ Pertumbuhan ◦ Perbaikan dan
regenerasi sel ◦ Perkembangan
(berasal dari zygot)
◦ Pewarisan materi genetik
20 µm 200 µm
(b) Growth and development.
This micrograph shows a
sand dollar embryo shortly
after the fertilized egg divided,
forming two cells (LM).
(c) Tissue renewal. These dividing
bone marrow cells (arrow) will
give rise to new blood cells (LM).
Siklus Sel & Mitosis - Eva
Siklus Sel & Mitosis - Eva
Inti sel Eukariot dan Struktur Kromosom
The structure of a highly condensed, replicated chromosome.