Epigenesis Theory - PowerPoint PPT Presentation

1 / 13
About This Presentation
Title:

Epigenesis Theory

Description:

Epigenesis Theory. Casper F. Wolff (1738-1794) ????? embryo ?????????. ???????????????????????????????????????????????????????????????????????? ?? ... – PowerPoint PPT presentation

Number of Views:883
Avg rating:3.0/5.0
Slides: 14
Provided by: ulys59
Category:

less

Transcript and Presenter's Notes

Title: Epigenesis Theory


1
Epigenesis Theory
Casper F. Wolff (1738-1794)
????? embryo ?????????
??????????????????????????????????????????????????
?????????????????????? ????????????????? embryo
???????? ????????????????? (fertilization)
2
Pangenesis
Provisional Hypothesis of
Charles Darwin
???????????????????????? ????????????????????????
?? ???????? ?????? (gemmule) ??????? gemmule
??????????????????????? testis ??? ovary Gemmule
????????????????????? gamete ???????????????????
??????? gemmule ??????????????? ????
gemmule ?????????????????????????????
3
Galton 1822 - 1911
4
Acquired Character
???????????????????????????????
??????????????????????????????
??????????????????????????????????????????????????
5
Lamark
Lamarkism
????????????????????????????????????????????
???????????????????????? ???????????????????????
???????????????????????? ????????????????????
(acquired character) ???????????????????????
? ?????????????????????????????
????????????????? ?????????????????????????
??????????????????????????????????????
6
(No Transcript)
7
August Weismann
???????
8
August Weismann
Germplasm Theory
??????????????????????????????????????????????????
????????????? ????????????????????????
??????????????????????????????????????????????????
?????????????????????????? (Zygote)
9
Gregor Johann Mendel
1822 - 1884
Experiment in Plant Hybridization
Natural History Society in Brunn 1865
10
Mendel's law
Law of Segregation
Law of Independent Assortment
11
GMOs
Genetic Modified Organisms
Insect resistant gene Herbicide resistant
???? BT, ???????BT Green tomato
12
(No Transcript)
13
??????? ???????? 1 ?????????????? 6 ??.?.
2544
A ???????? ?????? a ????????
???????? D ???????? ???????? d ????????
???????? B ???????? ??????? b
???????? ????? Genotype Bb ???????????
?????????
Complete Dominant
Incomplete Dominant
AaBbdd x AaBbDD
???????????????? Phenotype ???????????????????????
???????????? ?????????????????????
Write a Comment
User Comments (0)
About PowerShow.com