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emmasim [6.3K]
3 years ago
9

Jack has been diagnosed with neurofibromatosis 1 (NF1) and presents with skin that is populated by flat, light-brown spots and n

eurofibromas under the skin. He also has a mild learning disorder. His sister Jill has also been diagnosed with NF1, however, her only symptom is the neurofibromas. The most likely cause of these differences is:
Social Studies
1 answer:
AVprozaik [17]3 years ago
7 0

Answer:

The most likely cause of this disease is that siblings have a variable expression of this disease.

Explanation:

Neurofibromatosis 1 is an autosomal dominant disorder, even though it is a very rare disease to occur. This dominant nature causes this disease to be expressed even in people who have heterozygous alleles for it, which makes it easier for siblings to have this disorder, since only those who are hom0zygous recessive would not present it. However, the expressiveness of the disease may vary between siblings, as is the case shown above, where although the two siblings have the same disease, they present it in different ways.

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Who may regulate a natural monopoly?
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The correct answer is C.

A natural monopoly is a market situation in which a single firm serves the whole market, therefore it is the only producer of a certain good or service, due to the fact that there exist some natural conditions which establish huge barriers for new competitors entering in the market, in the sense of extremely large fixed costs.

In such a case there is no market competition, therefore the monopoly can decide on the quantity supplied and on the price of the products (usually establishing a much higher one that if there was competition). Such a situation is harmful for consumers. They purchase products at a higher price and with lower quality because, as there is no competition, producers are not forced to continuously develop and improve their products. This is why goverment intervenes, trying to soften the situation by decreasing the profits of the monopolists and increasing the welfare of consumers, and the social welfare.

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Factors that contributed to the decline of the Roman Empire were:

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Rome could not grow enough food and maintain a large enough army to fend off barbarian tribes.

Explanation:

Rome was  the center of the antiquity for ages as it was the biggest empire in the world but in the end of it it had become too big for proper management from the seat at Rome

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It had become too big to sustain itself and the profits from the agriculture of the empire were just not enough.

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3 years ago
Why was George Washington chosen to be the leader of the Continental Army? What qualities made him a great choice?
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The integrity, dignity, wisdom, courage, and determination George Washington displayed that made him a great choice.

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The best way to illustrate the frequencies for each political preference is a bar graph.

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