La miopia es un caracter bastante comun en la especie humana. Un matrimonio en el que ambos conyugues poseen vision normal, tienen dos hijos, uni con una vision normal y el otro con miopia. Teniendi en cuenta el fenotipo de todos los miembros de la familia ¿quenpodrias deducir del gen que controla la miopia? ¿ que genotipo podrias asignsr a cada individuo?

Answers

Answer 1

Answer:

El gen que controla la miopia es dialelico, autosómicoEl alelo dominante M expresa visión normal, El alelo recesivo m expresa  miopia, Los padres con visión normal serían heterocigotas, Mm.Tendrían un hijo con visión normal homocigota dominante MM o Heterocigota Mm   Tendrían otro hijo homocigota recesivo con miopia, mm.

Explanation:

Datos disponibles:

Ambos padres poseen visión normalUno de los hijos tiene visión normalEl otro hijo tiene miopia

Podríamos establecer que M es el alelo dominante, mientras que m es el alelo recesivo.

A partir de la información brindada, podríamos suponer que:

Opción 1:

La miopia es un caracter expresado por un gen dominante. Si este fuera el caso, entonces al menos uno de los padres debería tener miopia para poder heredarle al hijo el alelo dominante para expresar el caracter. Si este fuera el caso, los posibles genotipos de los padres serían:

Parental)  Mm   x   mm (al menos uno de los padres con miopia)

F1) 1/2 Mm (Hijo miope)

    1/2 mm (Hijo con visión normal)

Pero en este caso, los dos padres tienen visión normal, entonces si el gen dominante expresa la miopia, los genotipos de los padres serian homocigotas recesivos, mm. Si ambos padres son homocigotas recesivos, no podrían heredarle a ningun hijo el alelo de la miopia. En este caso, la cruza sería:

Parental) mm    x    mm

F1) 100% mm (todos los hijos con visión normal)

Sin embargo, para el ejemplo planteado, los dos padres tienen visión normal, uno de los hijos tiene visión normal y el otro tiene miopia, lo que nos conduce a la segunda opción.

Opción 2:

La miopia es un caracter heredado por un gen recesivo, m. Mientras que la visión normal es heredada por un gen dominante, M. Entonces, si este fuera el caso, para que ambos padres con visión normal, tengan un hijo homocigota recesivo para el caracter, entonces ambos padres deberian ser heterocigotos. Su hijo miope heredaría un alelo recesivo de cada padre y expresaría el defecto. El genotipo de las personas con miopía sería entonces homocigota recesivo. Esta cruza sería de la siguiente manera:

Parental) Mm    x    Mm  (Ambos padres heterocigotas)

Gametos) M   m     M     m

Cuadro de Punnet)

                M             m

     M       MM         Mm

     m       Mm         mm

F1) 3/4 o 75% de probabilidad de tener un hijo con visión normal

    1/4 o 25% de probabilidades de tener un hijo miope.

Entonces, podemos concluir que:

El gen que controla la miopia es dialelico, autosómicoEl alelo dominante M expresa visión normal, El alelo recesivo m expresa  miopia, Los padres con visión normal serían heterocigotas, Mm.Tendrían un hijo con visión normal homocigota dominante MM o Heterocigota Mm   Tendrían otro hijo homocigota recesivo con miopia, mm.


Related Questions

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d) Our lower brain alerts the hypothalamus to tell us it is wrong.

Answers

Answer: c. Our higher brain tells us it is inappropriate and incorrect symbolism

Explanation:

We wouldn't we wear formal attire or use forks when eating soup because our higher brain tells us it is inappropriate and incorrect symbolism.

The higher brain helps us to interpret vision, emotions, touch, speech, reasoning etc. Since eating soup with forks isn't appropriate, this will be detected by the higher brain. The higher brain simply performs intellectual functions.

Therefore, the answer is C.

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Answers

Answer:

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Answers

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Answers

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Matter 2
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atomic number
Element
electron
three
balloons
proton
carbon
neutron
two
same
Atoms are the basic building blocks of all matter. It was once thought that an atom was the smallest particle of matter but
scientists discovered that there are smaller subatomic particles that make up the atom. There are drag and drop answer here basic subatomic particles:
the drag and drop answer here, the drag and drop answer here, and the drag and drop answer here the number of protons is called the
drag and drop answer here. The proton is the particle that is used to identify the drag and drop answer here. Every element has a specific number of
protons. No two elements will have the drag and drop answer here number of protons. For example: an atom that has six protons will be a
drag and drop answer here atom, drag and drop answer here carbon atoms will have six protons. If you have an atom that has drag and drop answer here
protons, you have an atom of helium (like the gas that we fill drag and drop answer here with). No other element will have two protons.

Answers

( Atoms) are the basic building blocks of all matter. It was once thought that an atom was the smallest particle of matter but

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Explanation:

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Answer:

The answer is Epicenter

Explanation:

Answer:

epicenter is the correct answer

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Answers

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Answer:

Explanation:

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Answers

Answer:

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Answers

Answer:

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Answer:

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Explanation:

WILL GIVE BRAINLIEST!!!!!!
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testosterone is to a steroid hormone.

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a nucleotide is to a nucleic acid.

Answers

Answer:

I think it's D I could be wrong but that's what I'm thinking

Answer:

The correct answer in Option B.

The analogy pertains to the building blocks or monomers of biomolecules, with the monomer preceding the polymer....

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Answers

Answer:

The amount of fossil fuels formed is much less than the amount used.

Explanation:

Fossil fuels, which include petroleum, coal, natural gas etc are an example of non-renewable sources of energy. They are termed non-renewable because they are sources that gets exhausted quickly without replenishment.

One of the characteristics of non-renewable sources of energy is that they get exhausted faster than they can be produced. Hence, regarding fossil fuels as an example of non-renewable source of energy, this means that the amount of fossil fuels formed is much less than the amount used.

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