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Genetics and Inheritance

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   明天又要考科學的遺傳部分!!

   下星期一好像要考歷史...

   今天不知道怎樣突然要考ESL

   上禮拜妞居然沒跟我說!

   害我覺得好驚訝.....

   還有我metaphor和simile寫錯了..

   simile是like,as....

   metaphor就是直接解釋...

   PS..Plan終於做完了!!

   只是品質怎樣就不知道囉!!


Genetics: the branch of science that studies how characteristics of parents are passed on their offspring

Gregor Mendel:Father of Genetics
1st person to design and conduct scientific experiments involving inheritance
proposed 4 hypotheses!!

Gene: segement of DNA containing information

Chromosomes are coiled up DNA

Protein: long chians of amino acids used by cells to perform a variety of functions
produced in the cell by translating the DNA code into an amino acid chain
triplet codes of DNA are used to produce the amino acid chain which makes up the protein

Mutation: change or damage to the DNA of a living organism
Physical, Chemical, Biological
Neutral mutations: a change in DNA that does not change the protein that is produced.--makes same amino acid


Mendelian Genetics
experimenting with pea plants

Result of the experiments
1Elements exist
2Elements remain unchanged
3Different forms of the element caused different traits
4One form is dominant, and one form is recessive

Allel=different forms of a gene

Incomplete dominance-when neither of the alleles for a gene is dominant over the other→offspring are an intermediate of both parent’s features

Co-dominance-neither allele is dominant over the other so both alleles are expressed→offspring have BOTH characteristics

台長: ∮♫⊙○⊙♫∮
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