g10 reproduction
DESCRIPTION
The first part of our biology unit.TRANSCRIPT
Grade 10
Biology
International School of
Tanganyika
Mr Kremer
Reproduction: Key concepts
• Asexual + sexual reproduction + examples
• Mitosis + IPMAT
• Meiosis + IPMAT x2
• Sources of genetic variation
Mitosis
Mitosis + the Cell CycleInterphaseProphase
MetaphaseAnaphaseTelophase
Cytokinesis
Mitosis + the Cell CycleInterphaseProphase
MetaphaseAnaphaseTelophase
Cytokinesis
Mitosis + the Cell CycleInterphaseProphase
MetaphaseAnaphaseTelophase
Cytokinesis
Mitosis + the Cell CycleInterphaseProphase
MetaphaseAnaphaseTelophase
Cytokinesis
Mitosis + the Cell CycleInterphaseProphase
MetaphaseAnaphaseTelophase
Cytokinesis
Meiosis
Meiosis + Variation
Interphase as normal 2 divisions
Crossing overHaploid gametesRecombination
Meiosis + Variation
Prophase 1
Crossing over
Meiosis + Variation
Prophase 1
Crossing over
Meiosis + Variation
Metaphase 1
Meiosis + Variation
Anaphase 1
Meiosis + Variation
Telophase 1
(sometimes followed by interphase,
but not always)
Meiosis + Variation
Prophase 2
NO crossing over!
Meiosis + Variation
Metaphase 2
Meiosis + Variation
Anaphase 2
Meiosis + Variation
Telophase 2
Produces 4 haploid gametes
Mitosis vs Meiosis
Mitosis Meiosis
•single division
•brief prophase - no
crossing over
•produces 2 diploid
daughter cells
•diploid daughter cells
genetically same as parent
cell
•2 division processes
•lengthy prophase includes
crossing over - more
variation
•produces 4 haploid
gametes
•gametes not genetically
identical to parent cell
Sources of Variation
Sources of Variation
MutationRecombinationCrossing Over
Image: www.beltina.org
Sources of Variation
MutationRecombinationCrossing Over
Sources of Variation
MutationRecombinationCrossing Over