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Chapter 17: Genetic - Coggle Diagram
Chapter 17: Genetic
Mutations
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Causes of mutations 
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Point mutation: single nucleotode base is changes, insert or deleted
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Monohybrid cross
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Test cross
Experimental cross of an individual organism of dominant phenotype but inknown genotype and an organism with a homozygous recessive genotype
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Concept
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phenotype: expression of allels in the individual's size, shape or metabolism
Dihybrid cross
independent assortment
if two gene are on separate chromosome, the alleles of one gene move independently of the alleles of the other gene
9:3:3:1 ration
when all types of gamets are produced in equal numbers and have equal opportunities to participate in reproduction
Crossing over
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Replication of DNA
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Steps
- helicase unzips DNA strand.
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- DNA polymerase attaches new nucleotides
- subunit of DNA polymerase proof reads DNA
- DNA ligase seals strands together
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