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UNIDAD 2. LA HERENCIA BIOLÓGICA. GENÉTICA.

4 º ESO. UNIDAD 2. BIOLOGÍA.
by isaïes belda on 15 October 2014

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Transcript of UNIDAD 2. LA HERENCIA BIOLÓGICA. GENÉTICA.

LA HERENCIA BIOLÓGICA:
GENÉTICA.

CONCEPTOS GENERALES
Gen
Genotipo
Fenotipo
Alelos
LA ACTUACIÓN DE LOS GENES EN LA HERENCIA
Herencia dominante
Herencia intermedia
Codominancia
Las leyes de la herencia de mendel
1ª Ley de Mendel
Tablero de Punnet
2ª Ley de Mendel
3ª Ley de
Mendel
GENÉTICA MENDELIANA EN HUMANOS
An example of an genetically unhealthy pedigree
Modern genetic testing can detect genotype directly
Dominant
Examples of other Dominant Conditions
Achondroplastic Dwarfism
One of several forms of Dwarfism in humans.

Affects cartillage formation and bone growth.

Lethal in homozygous condition
Results from an abnormally large huntingtin protein.

Leads to degeneration of the nervous system.

Noticeable and lethal in middle age.
Huntington's Chorea
Woody Guthrie
Peter Dinklage
Peter Hayden Dinklage1 (Morristown; 11 de junio de 1969) es un actor de cine, televisión y teatro estadounidense... Las crónicas de Narnia: el príncipe Caspian. Desde 2011 se le puede ver en la serie de HBO Game of Thrones, por la cual ganó un Emmy y un Globo de Oro.
Woodrow Wilson Guthrie (Okemah, Oklahoma, 14 de julio de 1912 Nueva York, 3 de octubre de 1967), conocido como Woody Guthrie, fue un prolífico e influyente músico folk estadounidense, conocido por su identificación con la gente común, los pobres y los oprimidos, así como por su odio al fascismo y la explotación. Es universalmente conocido por su canción This Land Is Your Land.

In the squares of the city - In the shadow of the steeple
Near the relief office - I see my people
And some are grumblin' and some are wonderin'
If this land's still made for you and me.

This land is your land, this land is my land
From California, to the New York Island
From the redwood forest, to the gulf stream waters
This land was made for you and me
En las plazas de la ciudad - a la sombra del campanario
cerca de la oficina de ayuda - veo a mi gente
y algunos se quejan y algunos se preguntan
si esta tierra aún fue creada para tí y para mí

Esta tierra es tu tierra, esta tierra es mi tierra
desde California a la isla de Nueva York
desde el bosque de secuoyas rojas hasta las aguas corrientes del golfo
esta tierra fue creada para tí y para mí
Recessive
Attached earlobes show a a recessive inheritance pattern
Examples of other Recessive Conditions
Albinism
A mutation in the melanin production pathway.

Can be associated with vision problems, increased photosensitivity.

Seen in many different animals
Phenylketonuria (PKU)
An inability to digest the amino acid phenylalanine (common in many foods and artificial sweeteners).

Untreated can lead to mental retardation.

Can be managed with diet regulation.
why?
Alelos múltiples y polimorfismo genético
herencia ligada al sexo
mutaciones
ejercicios
Hemophilia
Inheritance of Hemophilia in a European Royal Lineage.
A defect in the proteins involved in blood clotting.2 different forms are X-linked recessive conditions.Can lead to death from hemorrhage (not typical in modern times).
A defect in the proteins that detect particular wavelengths of light.

Harmless...unless you want to be a pilot.
Daltonismo
An example of a vision test given to children to determine color-blindness.
1936
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