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3.3 Meiosis
- Nature of Science
- Meiosis was discovered by
microscope examination of
dividing germ-line cells
- Meiosis was discovered by
microscope examination of
dividing germ-line cells
- Drawing Stages
of Meiosis
- Interphase
- Prophase
- Metaphase
- Anaphase
- Telophase
- Cytokinesis
- Cytokinesis
- Separation of pairs of
homologous chromosomes in
the 1st division of meiosis
- From diploid (2n) to haploid (n)
- It allows fusion of gametes
- It allows fusion of gametes
- From diploid (2n) to haploid (n)
- Telophase
- Random orientation of
pairs of homologous
prior to separation
- Anaphase
- Pairing of homologous
chromosomes
- Crossing over
- Condensation
- Condensation
- Crossing over
- Metaphase
- DNA replication
- Sister chromatids
- Sister chromatids
- Prophase
- Interphase
- Karyotype
- Genetic counseling
- Aim 8
- Selective abortion of female
fetuses in some countries
- Selective abortion of female
fetuses in some countries
- Non-disjunction
- Down Syndrome
- Age of parents
- Other chromosome
abnormalities
- Down Syndrome
- Aim 8
- Chorionic villus
vs amniocentesis
- Risks
- Risks
- Genetic counseling
- TOK
- In 1922, the number of
chromosomes counted in
a human cell was 48
- For what reasons do
existing beliefs carry
a certain inertia?
- For what reasons do
existing beliefs carry
a certain inertia?
- In 1922, the number of
chromosomes counted in
a human cell was 48
- Genetic variation
- Fusion of gametes
- Crossing over
- Random orientation
- Fusion of gametes
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