979821
Description
Mind Map by STEVE harton, updated more than 1 year ago
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Created by STEVE harton
almost 10 years ago
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10.1 Meiosis
- NATURE OF SCIENCE
- Careful observation and
record keeping turned up
anomalous data that
Mendel's law of
independent assortment
could not account for
- Thomas Hunt Morgan
developed the notion of
linked genes to account
for the anomalies
- Thomas Hunt Morgan
developed the notion of
linked genes to account
for the anomalies
- Careful observation and
record keeping turned up
anomalous data that
Mendel's law of
independent assortment
could not account for
- CHROMOSOMES
- Chromosomes replicate in
interphase before meiosis
- Independent assortment of
genes is due to the random
orientation of pairs of
homologous chromosomes in
meiosis I
- Crossing over
- Exchange of DNA material
between non-sister
homologous chromatids
- Produces new combinations of
alleles on the chromosomes of
the haploid cells (n)
- Chiasmata
- Formation between non-sister
chromatids can result in an
exchange of alleles
- Drawing diagrams to
show chiasmata formed
by crossing over
- Formation between non-sister
chromatids can result in an
exchange of alleles
- Exchange of DNA material
between non-sister
homologous chromatids
- Homologous chromosomes
separate in meiosis I
- Sister chromatids
separate in meiosis II
- Sister chromatids
separate in meiosis II
- Crossing over
- Independent assortment of
genes is due to the random
orientation of pairs of
homologous chromosomes in
meiosis I
- Chromosomes replicate in
interphase before meiosis
- AIM 6
- Staining o flily anthers or
other tissue containing
germ-line cells and
microscope examination to
observe cells in meiosis
- Staining o flily anthers or
other tissue containing
germ-line cells and
microscope examination to
observe cells in meiosis
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