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Biology lecture 6

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Mutations
What Are Mutations? ,[object Object],[object Object],[object Object]
Are Mutations Helpful or Harmful? ,[object Object],[object Object]
Types of mutations ,[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
 
 
Types of Mutations
Change in genotype ,[object Object],[object Object],[object Object]
Chromosome Mutations
Chromosome Mutations ,[object Object],[object Object],[object Object]
Chromosome Mutations ,[object Object],[object Object],[object Object],[object Object],[object Object]
Deletion ,[object Object],[object Object]
Inversion ,[object Object],[object Object],[object Object]
Duplication ,[object Object]
Translocation ,[object Object],[object Object]
Translocation
Chromosome Mutation Animation
 
Gene Mutations
Gene Mutations ,[object Object],[object Object],[object Object]
Types of Gene Mutations ,[object Object],[object Object],[object Object],[object Object],[object Object]
Point Mutation ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Point Mutation ,[object Object],[object Object],[object Object],[object Object],[object Object]
 
 
Frameshift Mutation ,[object Object],[object Object],[object Object]
Frameshift Mutation ,[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Amino Acid Sequence Changed
Gene Mutation Animation
Nonsense Mutation
[object Object]
Nondisjunction ,[object Object],[object Object]
 
Non-disjunction during meiosis ,[object Object],[object Object],[object Object],[object Object]
 
Down’s Syndrome ,[object Object],[object Object],[object Object],[object Object],[object Object]
 
 
 
Non dis-junction of sex chromosomes
Turner’s syndrome ,[object Object],[object Object],[object Object],[object Object]
 
Klinefelter’s syndrome ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
 
Complete non-disjunction and polyploidy ,[object Object],[object Object],[object Object],[object Object]
Polyploidy ,[object Object],[object Object],[object Object]
A: the strawberry plant is exposed to a chemical B: due to the effect of chemical, total non-disjunction at meiosis produces diploid gametes(2n) C: two diploid gametes fuse at fertilisation D: a new plant develops which has four sets of chromosomes (4n)
Economic significance ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Effects of polyploidy ,[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Mismatch Repair
Excision Repair

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Biology lecture 6