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How are genes inherited? - Coggle Diagram
How are genes inherited?
Crossing over
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Occurs between two homologous chromosomes (which are chromosomes that have the same genes in the same order)
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The steps of meiosis
Prophase 1 → Chromosomes condense, the nuclear membrane breaks down, and crossing over occurs
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Meiosis 2
Mitosis of haploid cells 23→ 23(you count by centromeres, not actual chromosomes)
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Intersex individuals
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Missing or out-of-place sex-determining region Y gene (SRY)- this can cause a person who is XX to look male, and a person who is XY to look female
Natural or synthetic hormone exposure occurring during embryo development can cause someone to be intersex
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The purpose of meiosis
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When sperm and egg join, the cell will have the proper amount of DNA
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Meiosis1
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Happloid → diploid or 46→ 23 (you donut by centromeres, not actual chromosomes)
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