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The Work of Gregor Mendel

GREGOR MENDEL!!!!
by

Charla Donatelli

on 12 February 2013

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Transcript of The Work of Gregor Mendel

The Work of Gregor Mendel Fertilization Genes and Alleles Dominant
and
Recessive Genes Segregation The "Father of Genetics" By: Juliana Cuccaro
and
Charla Donatelli Reproduction The male part of the cell makes pollen, containing the sperm
the female portion has eggs.
To produce a new cell, this process is called: Fertilization Mendel's Garden He had Pea plants that were "true-breeding" which means self pollinating.
is a specific characteristic of an individual A Trait His Work Cross-Pollination He had to prevent self-pollination; he cut off the male parts.
Then dusted the pollen from another plant into another plant's female part Hybrids they are the offspring of crosses between parents of different traits.
Mendel studied 7 different traits of Pea plants
then he studied the outcome The End! Q uick Lab Trait Survey Q uestions Who is Mendel??
What did he do?
How does this relate to us??
Why is this important?? the scientific study of heredity, or the delivery of characteristics from parent to offspring. Gregor Johann Mendel How his Experiments got started! Formation of Gametes He was an Austrian Monk that attended to the monastery garden in Brunn.
After being a priest, he studied physics, botany, and zoology at the University of Vienna
Teached at a high school and worked in a monastery Born: 1822 in (present-day) the Czech Republic Genetic Crosses the original parental generation is called the P
their offspring is F1= first filial generation Inheritance An individual's characteristics are decided by the factors from one parent to the next.
- the factors from parent to offspring - different forms of the gene Genes Alleles Principle of Dominance - this states that some alleles are recessive and others are dominant if it has at least 1 dominant allele it will take form of that trait if it has a recessive trait it will only use that if no dominant is there Did the recessive genes disappear or were they still there? The second offspring are F2
the traits by the recessive alleles: reappeared in second generation WHY? This is the separation, or , of alleles
The traits must segregated from each other in formation of the sex cells Segregation Gametes- the formation of sex cells the alleles of each and every gene segregate.
Result: each gamete carries only 1 allele for each gene During this formation- Explanation Capital letter- dominant
Lower case letter- recessive When there are no dominant genes or alleles- recessive shows Our Article on
Gregor Mendel
Wonders of the Invisible World
Gustav Jäger
1867 Mendel's Book on Cells 1) Copy this chart
2) Write a prediction about: if the traits in the table will be evenly distributed or there will be more dominant then recessive "the father figure of genetics, Gregor Mendel (1822–1884)"
"both heredity and variation were situated within the broad topic of "generation. This included the regeneration of lost and damaged organs, the development of the embryo from the fertilized egg, and all forms of reproduction, both sexual and asexual." Gale Resources http://ic.galegroup.com/ic/suic/ReferenceDetailsPage/ReferenceDetailsWindow?failOverType=&query=&prodId=SUIC&windowstate=normal&contentModules=&mode=view&displayGroupName=Reference&limiter=&currPage=&disableHighlighting=false&displayGroups=&sortBy=&source=&search_within_results=&action=e&catId=&activityType=&scanId=&documentId=GALE%7CCX3424300313 3) Examine your features and determine what traits you have.
4) Interview 14 other students!!! Questions 1) 2) Calculate the percentages. How does these numbers compare to your predictions? Why do you think recessive traits are more common in some cases?
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