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aleksandr82 [10.1K]
3 years ago
15

Explain why Huntington disease is caused by a dominant allele.

Biology
1 answer:
Ymorist [56]3 years ago
5 0

Answer:

Explanation:

The huntington disease is a disease that is caused by the dominent allele. It is the disease which causes damage to the brain cell. The mother and father can be carrier or affected by the disease. As in the condition if both parents exhibit a hetrozygous condition that is both have a dominent as well as as a recessive allele responsible for the disease. Then there is 75% chances of occurence of disease in the child. If both parents are homozygous that is both have dominent alleles then 100% chances of occurrence of the disease.

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What are gravitational waves and what disturbance causes them to form
Natasha2012 [34]
Gravitational waves are ripples in spacetime. They are created whenever objects with mass move. Hope this helps :)
6 0
3 years ago
En un cruce entre peces naranjas y peces grises se obtiene una generación (f1) de 50% peces grises . Realice el cruce y explique
Ilya [14]

Answer:

Uno de los progenitores es heterocigoto para color naranja (Nn) y el otro parental es homocigoto recesivo para gris (nn). Al haber una cruza entre un homocigoto recesivo y un heterocigoto, la 50% de la progenie expresa color naranja (Nn), mientras que el otro 50% expresa color gris (nn).

Explanation:

<u>Datos disponibles:</u>

  • Cruce entre peces naranjas y peces grises
  • 50% de la F1 son peces grises
  • Naranja dominante sobre gris

Podemos nombrar el alelo dominante para color naranja <em>N</em>, y al alelo recesivo  para color gris <em>n</em>.

Para que en un cruce entre dos fenotipos distintos, el 50% de la primer camada exprese uno de estos fenotipos, entonces uno de los parentales debe ser heterocigoto, mientras que el otro parental debe ser homocigoto recesivo. De esta forma 50% de la primera generación expresara uno de los fenotipos, mientras que el otro 50% expresará el otro fenotipo.

Supongamos que uno de los parentales lleva el genotipo <em>Nn</em>, y el otro parental es <em>nn</em>.

Cruce:

Parental)      Nn    x     nn

Gametas)   N    n       n    n

Fenotipos) Naranja     Gris

Cuadro de Punnett)      N           n

                            n       Nn         nn

                            n       Nn         nn

F1)  2/4 = 1/2 = 50% de la progenie tendrá genotipo heterocigoto, Nn

     2/4 = 1/2 = 50% de la progenie tendrá genotipo homocigota recesivo,    

     nn

     50% de la progenie será color naranja (Nn)

     50% de la progenie será color gris (nn)

               

3 0
3 years ago
_____ communicate information in the opposite direction, from the brain and nervous system to muscles and glands.
yulyashka [42]

Answer:

The correct answer would be efferent neurons.

Efferent neurons are the motor neurons which communicate information in the opposite direction as compared to the afferent neurons, that is, they communicate information or response impulses from the brain or central nervous system to the muscles or glands.

The response impulses results in the movement of the muscles or activation/deactivation of certain gland

In contrast, afferent neurons are the sensory neurons which carry impulses from the receptors to the central nervous system.

5 0
3 years ago
What happens to the undigested Good in the body?
Tanzania [10]

It shows up in your stool. Specifically the undigested food includes material that cannot be absorbed by the vili found in the small intestine. Thereafter the material moves to the large intestine, goes through the bowel tract, turns into feces and exits the GI tract via the rectal cavity




3 0
3 years ago
What is the structure shown in the figure?
Aneli [31]

Answer:

lipids

Explanation:

5 0
3 years ago
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