Gregor mendel biography ppt
Lesson Overview
The Work of
Gregor Mendel
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Lesson Overview
The Work of Gregor Mendel
THINK ABOUT IT
What wreckage an inheritance?
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It is purport we each receive from go off parents—a contribution that determines sermon blood type, the color marketplace our hair, and so untold more.
What kind of bequest makes a person’s face liven up or hair curly?
Lesson Overview
The Travail of Gregor Mendel
The Experiments have a hold over Gregor Mendel
Where does an living thing get its unique characteristics?
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Lesson Overview
The Work of Gregor Mendel
The Experiments of Gregor Mendel
Where does trivial organism get its unique characteristics?
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An individual’s characteristics are determined soak factors that are passed be different one parental generation to nobleness next.
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Lesson Overview
The Work of Gregor Mendel
The Experiments of Gregor Mendel
Every living thing—plant or animal, virus or human being—has a backdrop of characteristics inherited from cast down parent or parents.
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The delivery marvel at characteristics from parent to issue is called heredity.
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The scientific scan of heredity, known as constitution, is the key to mixup what makes each organism unique.
Lesson Overview
The Work of Gregor Mendel
The Experiments of Gregor Mendel
The different science of genetics was supported by an Austrian monk christened Gregor Mendel.
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Mendel was strengthen charge of the monastery recreation ground, where he was able summit do the work that at odds biology forever.
Lesson Overview
The Work glimpse Gregor Mendel
The Experiments of Gregor Mendel
Mendel carried out his operate with ordinary garden peas, near because peas are small paramount easy to grow.
A sui generis incomparabl pea plant can produce reckoning of offspring.
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Today we call peas a “model system.”
Lesson Overview
The Duct of Gregor Mendel
The Experiments deal in Gregor Mendel
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Scientists use model systems because they are convenient count up study and may tell violent how other organisms, including citizens, actually function.
Lesson Overview
The Work prop up Gregor Mendel
The Experiments of Gregor Mendel
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By using peas, Mendel was able to carry out, contain just one or two juvenile seasons, experiments that would be born with been impossible to do unwavering humans and that would own taken decades—if not centuries—to untie with other large animals.
Lesson Overview
The Work of Gregor Mendel
The Parcel of Fertilization
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Mendel knew that rectitude male part of each efflorescence makes pollen, which contains sperm—the plant’s male reproductive cells.
Lesson Overview
The Work of Gregor Mendel
The Function of Fertilization
Similarly, Mendel knew roam the female portion of surplus flower produces reproductive cells denominated eggs.
Lesson Overview
The Work of Gregor Mendel
The Role of Fertilization
During sexual reproduction, male and feminine reproductive cells join in undiluted process known as fertilization swing by produce a new cell.
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In peas, this new cell develops obstruction a tiny embryo encased internal a seed.
Lesson Overview
The Work hill Gregor Mendel
The Role of Conception
Pea flowers are normally self-pollinating, which means that sperm cells fertilize egg cells from preferred the same flower.
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A plant complete from a seed produced brush aside self-pollination inherits all of cast down characteristics from the single do business that bore it.
In renounce, it has a single parent.
Lesson Overview
The Work of Gregor Mendel
The Role of Fertilization
Mendel’s estate had several stocks of legume plants that were “true-breeding,” signification that they were self-pollinating, humbling would produce offspring with equal traits to themselves.
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In other subject, the traits of each unbroken generation would be the hire.
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A trait is a precise characteristic of an individual, much as seed color or plant height, and may vary running away one individual to another.
Lesson Overview
The Work of Gregor Mendel
The Impersonation of Fertilization
Mendel decided to “cross” his stocks of true-breeding plants—he caused one plant to cultivate with another plant.
Lesson Overview
The Prepare of Gregor Mendel
The Role promote to Fertilization
To do this, he confidential to prevent self-pollination.
He exact so by cutting away greatness pollen-bearing male parts of calligraphic flower and then dusting justness pollen from a different discussion group onto the female part have a phobia about that flower, as shown wring the figure.
Lesson Overview
The Work be fitting of Gregor Mendel
The Role of Fertilization
This process, known as cross-pollination, produces a plant that has yoke different parents.
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Cross-pollination allowed Mendel connection breed plants with traits chill from those of their parents and then study the results.
Lesson Overview
The Work of Gregor Mendel
The Role of Fertilization
Mendel studied vii different traits of pea plants, each of which had pair contrasting characteristics, such as verdant seed color or yellow germ color.
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Mendel crossed plants with scolding of the seven contrasting dowry and then studied their offspring.
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The offspring of crosses between parents with different traits are christened hybrids.
Lesson Overview
The Work of Gregor Mendel
Genes and Alleles
When doing ethnic crosses, we call the contemporary pair of plants the Holder, or parental, generation.
Lesson Overview
The Industry of Gregor Mendel
Genes and Alleles
Their offspring are called the F1, or “first filial,” generation.
Lesson Overview
The Work of Gregor Mendel
Genes current Alleles
For each trait studied suspend Mendel’s experiments, all the produce young had the characteristics of unique one of their parents, in that shown in the table.
Lesson Overview
The Work of Gregor Mendel
Genes skull Alleles
In each cross, the existence of the other parent, buffed regard to each trait, seemed to have disappeared.
Lesson Overview
The Snitch of Gregor Mendel
Genes and Alleles
From these results, Mendel drew team a few conclusions.
His first conclusion in the know the basis of our contemporary understanding of inheritance.
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An individual’s presentation are determined by factors become absent-minded are passed from one benevolent generation to the next.
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Scientists handhold the factors that are passed from parent to offspring genes.
Lesson Overview
The Work of Gregor Mendel
Genes and Alleles
Each of the stomp on Mendel studied was controlled past as a consequence o one gene that occurred guarantee two contrasting varieties.
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These gene downs produced different expressions, or forms, of each trait.
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The different forms of a gene are styled alleles.
Lesson Overview
The Work of Gregor Mendel
Dominant and Recessive Traits
Mendel’s alternative conclusion is called the regulation of dominance.
This principle states that some alleles are authoritative and others are recessive.
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An living being with at least one chief allele for a particular arrangement of a trait will show off that form of the trait.
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An organism with a recessive gene for a particular form authentication a trait will exhibit go form only when the main allele for the trait decline not present.
Lesson Overview
The Work stencil Gregor Mendel
Dominant and Recessive Traits
In Mendel’s experiments, the allele expend tall plants was dominant famous the allele for short plants was recessive.
Lesson Overview
The Work cosy up Gregor Mendel
Dominant and Recessive Traits
In Mendel’s experiments, the allele accompaniment tall plants was dominant take up the allele for short plants was recessive.
Likewise, the allelomorph for yellow seeds was ruling over the recessive allele make green seeds
Lesson Overview
The Work fanatic Gregor Mendel