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webnotes_lec7_genetics_bs110_092007

webnotes_lec7_genetics_bs110_092007 - – Staining pattern...

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Heterozygous female x Attached male Genotypes of eggs Genotypes of sperm
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2 Heterozygotes:
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Attached female x Free-lobed homozygote
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How to set up a Punnett Square to follow 2 traits (genes are not linked). Case 1: Two Heterozygotes Genotypes of parents? Gametes for each? How to arrange on square?
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2 Heterozygotes (tongue-rolling & earlobes):
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t f F T N? Ploidy?
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t f F T T t F f N? Ploidy?
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t f F T T t F f Q Q q q N? Ploidy?
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t f F T Q q N? Ploidy?
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Homologs (Homologous Chromosomes) Carry genes controlling the same inherited characters (*Campbell, et al.) Have the same: Length Centromere position
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Unformatted text preview: – Staining pattern BRCA2 Gene • “Tumor Suppressor” gene involved in early-onset BC • Function of protein: – repairs damaged DNA – regulates cell division • Locus: – Long arm of Chromosome 13 – base pair 31,787,616 - 31,871,804 Cell Division Summary *Homologs Separate Sisters Separate MEIOSIS MITOSIS DNA REPLICATION 1 diploid cell 1 diploid cell 2 haploid cells 4 haploid cells Sex cell Somatic cell 2 diploid cells *Sisters Separate (Meiosis 2) (Meiosis 1)...
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