Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN: 9780134580999
Author: Elaine N. Marieb, Katja N. Hoehn
Publisher: PEARSON
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Crossing over (mark all that apply):
O produces new assortments of maternal and paternal chromosomes
results in new gene combinations on chromosome
is considered a misdemeanor in Utah, Arizona, Alabama, Arkansas, Mississippi and South Carolina
occurs during Prophase I of meiosis
occurs during Anaphase I of meiosis
occurs during Prophase 2 of meiosis and increases genetic diversity
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Transcribed Image Text:Crossing over (mark all that apply): O produces new assortments of maternal and paternal chromosomes results in new gene combinations on chromosome is considered a misdemeanor in Utah, Arizona, Alabama, Arkansas, Mississippi and South Carolina occurs during Prophase I of meiosis occurs during Anaphase I of meiosis occurs during Prophase 2 of meiosis and increases genetic diversity
Which of the following occurs during the first (MI) stage of meiosis? (mark all that apply)
O centromeres split
tetrads form
chromosomes are in monad form
chromosomes are in dyad form
tetrads do not form
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Transcribed Image Text:Which of the following occurs during the first (MI) stage of meiosis? (mark all that apply) O centromeres split tetrads form chromosomes are in monad form chromosomes are in dyad form tetrads do not form
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Introduction:- Crossing over is the exchange of portions ( genetic segments) of non sister chromatids between homologous chromosomes .As the chromosome begin to move apart at the end of first prophase of meiosis ,they remain in contact at a point known as chiasmata .At this point the chromatid breaks and rejoin in such a way that the  sections or genetic segments or chromosomal segments are being exchanged .

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