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22 terms

Cytogenetics

Lecture 5 of BIOL3026/BIOL3926 at the University of Sydney
STUDY
PLAY
Walter S. Sutton
Proposed the chromosomal theory of inheritance in 1902/03
Sutton-Boveri
The chromosomal theory of inheritance is also known as the ___ theory
1902/03
The chromosomal theory of inheritance was proposed in...
1915
The chromosomal theory of inheritance was widely accepted after evidence supporting it was demonstrated by Thomas Hunt Morgan in...
mitosis
clonal copying of chromosome with no recombination
2c-4c-2c
Chromosome number during mitosis
meiosis
Recombination, creating gamete not identical to parent
4c-2c-1c
Chromosome number during meiosis
leptotene
First part of Prophase I where unpaired univalents are seen
zygotene
Second part of Prophase I where homologue pairing occurs and bivalents form
pachytene
Third part of Prophase I where the bivalents shorten
diplotene
Fourth part of Prophase I where the non-sister chromatids separate and chiasmata are visible
diakinesis
Fifth part of Prophase I where the arms on either side of the chiasmata repel and rotate
pro-metaphase
Sixth part of Prophase I where the bivalents begin to align
Anaphase I
The phase where independent segregation actually happens
reductional division
Anaphase I begins the process of ___
unpaired univalents
What would be observed in leptotene?
formation of bivalents
What would be observed in zygotene?
bivalent shortening
What would be observed in pachytene?
visible chiasmata
What would be observed in diplotene?
arms repel
What would be observed in diakinesis?
bivalents aligned
What would be observed in metaphase I?