Tuesday, March 4

»Mêndêl's Experiments«

Gregor Johann Mendel, an Austrian monk and botanist, is the "father of classical genetics." He was born in Heinzendorf, Moravia in Austria. In 1884, he joined the Augustinian Monastry of St. Thomas at Brunn, Austria at the age of 22.



Like many of us, Mendel also wondered how traits are transmitted from parents to their offsprings. He spent his life (10 years) only in experimenting on garden peas and another 2 years
analyzing his results.



Maybe, you have been wondering why Gregor Mendel choose garden peas for his experiment.

Me, myself is also curious BEFORE until our bio teacher explain to us why he select garden peas than others.



I remember the first reason that Ms. Steh told us why Mendel choose the garden peas.
It is because the plant has several characters that exhibit two contrasting expression
or traits. Another reason for Mendel's choice is that the garden peas reproduce at a fast
rate. Thus, a number of generation can be produced within a short period of time. Garden peas
also don't need much caring and cultivating. Garden peas flowers are structurally adapted for
self-polination. Our bio teacher also tell us the three important steps in mendel's experiments


The three important steps in mendel's expriment:



  1. Gregor Mendel studied one character with two contrasting expressions at a time.


  2. Gregor Mendel cross-polinated the two pure-breeding plants with contrasting expressions for the same character.

»Below, it shows the results of the crosses for seven different characters. The parents were reffered to as the first parental(P1) generation. The oFfspring produced from the cross is referred to as the firstfilial(F1) generation. All offspring produced in the cross is expressed only one of the two contrasting traits of the parents.


CHARACTERS: (P1) (F1)


color of seed= yellow x green = yellow


shape of seed= round x wrinkled = round


pod color= green x yellow = green pod


pod shape= inflated x constricted = inflated


flower position= axial x terminal = axial


flower color= purple x white = purple


plant height= tall x dwarf = tall


»Mendel concluded that, when pure-breeding plants with contrasting traits are crossed, all offspring will express only one of the two traits. Mendel called this trait as DOMINANT. The trait that was not expressed is called RECESSIVE.

3. Mendel allowed the F1 plants to self-polinate

ÖÖfrom this observations, mendel conclued that the F1 plants must have a pair of of unit determiner, one for the dominant trait and another one for the recessive trait.ÖÖ

♥We have been discussing genetics for about a month. And it is really fun in studying it.. AT first, i was like "oh my god!! i don't know this!!" "nose-bleed!!" but eventually, our biology teacher who happens to be Ms. STeh make us realize that studying genetics is not that hard.. All you need is persevirance in order to understand the lesson.. like what i deed.. heheh.. i like to share what i feel., like zhyra, i'm not being boastful,. but when it comes to genetics, i can say that i'm quite good at it.. i ask my mom if she knows who iis gregor mendel., i laugh at her because she said that she forgot.. I want to say to her "mom, are you crazy?!? how could you forgot the father of classical genetics?!"

Genetics is not that hard!! i pRomise you..!! i swear!!

just have a persevirance and guts to study genetics!! It is really, really, really FUN!!

►Your only one in this world◄

♥♥and genetics could prove you that!!!!!!!!!!!!!!!♥♥

by: nica caspi