Lecture 5 posted - Achondroplasia Huntingtons disease...

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BIO 311D LECTURE 5 GENETICS 9/11/06
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Complete dominance
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Codominance
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Incomplete dominance
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Most genes exist in more than 2 allelic forms
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Pleiotropy Epistasis BC bC Bc bc 1 4 1 4 1 4 1 4 BC bC Bc bc 1 4 1 4 1 4 1 4 BBCc BbCc BBcc Bbcc Bbcc bbcc bbCc BbCc BbCC bbCC BbCc bbCc BBCC BbCC BBCc BbCc 9 16 3 16 4 16 BbCc BbCc × Sperm Eggs
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Pedigree analysis Presence or lack of a widow’s peak Attached or unattached earlobes
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Dominant and recessive genetic disorders
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Unformatted text preview: Achondroplasia Huntingtons disease Cystic fibrosis Albinism Genetic testing Frequency of chromosomal defects Approximately 50-75% of all fertilizations result in implantation failure or spontaneous abortion (SA) Of recognized pregnancies, approx. 10-20% result in SA In over 50% of SA, chromosomal abnormalities are found....
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Lecture 5 posted - Achondroplasia Huntingtons disease...

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