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Citrus2011 [14]
3 years ago
5

Prader-Willi syndrome is a genetic disorder involving a partial deletion of chromosome 15q on the paternal chromosome. When both

copies of a gene (or chromosome) are functional but only one is expressed, this is an example of ________.a) position effect variegationb) chromatin modificationsc) histone acetylationd) genomic imprintinge) X-inactivation
Biology
1 answer:
agasfer [191]3 years ago
3 0

Answer:

The correct answer is d) genomic imprinting.

Explanation:

Genomic imprinting is a biological process by which specific modifications in the germ line that produce differences in the expression of the genetic material that is biochemically marked indicating its parental origin. The Prader-Willi syndrome is one of the best known and most studied examples in relation to pathologies produced by genomic imprinting. Prader-Willi syndrome is a complex genetic disease that is fundamentally neurological. Its appearance is due to a deletion of a fragment of chromosome 15 derived from the father.

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Answer:

idk if it's good..

Explanation:

The dark-colored mice arose in the population at location A by random mutation. ... advantage over light-colored mice in that environment. • Over time, dark-colored mice became more common at location B because more of their offspring survived. to reproduce and pass on their genes, including genes for fur color.

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2 years ago
Paul had chicken pox when he was 5 years old. nicholas received the chicken pox vaccines. which type of immunity does each man h
GrogVix [38]

Answer:

Paul has natural active immunity, while Nicholas has artificial active immunity.

Explanation:

Natural active immunity is an immunity that occurs when an individual is exposed to a disease causing organism, gets infected, and also become immune to the disease due to the primary immune response. From the question, Paul has natural active immunity because he had chicken pox before, and the virus that causes chicken pox has interacted with his immune response, hence, making him to develop natural immunity to the disease.

Artificial active immunity is an immunity that an individual acquires when small amount of immunity to a disease is deliberately exposed to his body. Artificial active immunity is usually produced in the form of vaccinations. From the question, Nicholas has artificial active immunity because chicken pox vaccines were intentionally introduced to his body.

8 0
3 years ago
GIVING BRAILIEST!!!!<br><br> Give an example of a cause-and-effect relationship in biology.
Marina CMI [18]

Answer: When water is heated, the molecules move quickly, therefore the water boils.

Explanation:

7 0
3 years ago
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Ecosystems change when _______. a. living components of an ecosystem change b. nonliving components of an ecosystem change c. th
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<span>The correct answer is D: All of the above. Any small individual changes in the eco-system can cause larger scale changes throughout the eco system due to the interconnectivity of species within the larger system.</span>
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A high olecranon process locks the elbow into place when used in locomotion. This image of a human shows a dislocation of the ul
Zinaida [17]

Answer:

The type of locomotion that would benefit from having a high olecranon is suspensory (option A).

Explanation:

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The olecranon process blocks the extension of the elbow by fitting into the socket of the humerus bone, allowing the upper limb to be firm and stable for support on elevated surfaces, climbing, or suspensory locomotion.

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Locomotion brainly.com/question/12234

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3 years ago
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