Cell Membrane Metaphase B d Genotype Prophase I Nuclear Membrane DNA Synthesis O Equatorial Plate Either Or

Human Heredity: Principles and Issues (MindTap Course List)
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Chapter6: Cytogenetics: Karyotypes And Chromosome Aberrations
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Problem 3QP: A colleague e-mails you saying that she has identified an interesting chromosome variation at 21q13....
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There is a single crossing over event on the long chromosome between the A and D genes. Include both independent assortment possibilites.

Cell Membrane
Metaphase
B
d
Genotype
Prophase I
Nuclear Membrane
Either
DNA Synthesis
Equatorial Plate
Or
Metaphase I (first alternative) Metaphase I (second alternative)
At this stage, both alternatives should show the same crossover event on the long
chromosome. The difference between the two will be independent assortment
with the short chromosome. The use of colored pencils helps to demonstrate both.
Transcribed Image Text:Cell Membrane Metaphase B d Genotype Prophase I Nuclear Membrane Either DNA Synthesis Equatorial Plate Or Metaphase I (first alternative) Metaphase I (second alternative) At this stage, both alternatives should show the same crossover event on the long chromosome. The difference between the two will be independent assortment with the short chromosome. The use of colored pencils helps to demonstrate both.
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