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STatiana [176]
3 years ago
8

A 3-year-old child exhibited some early indication of Turner syndrome, which results from a 45,X chromosome composition. Karyoty

pic analysis demonstrated two cell types: 46,XX (normal) and 45,X. Propose a mechanism for the origin of this mosaicism.
Social Studies
1 answer:
quester [9]3 years ago
3 0

Answer:

The answer is mitotic nondisjunction of X Chromosomes.

Explanation:

Nondisjunction is a type of error that occurs resulting in daughter cells with chromosome numbers that are abnormal (aneuploidy). Due to the error in chromosome numbers, it gives rise to conditions such as Down Syndrome (Trisomy 21) and Turner Syndrome (Monosomy X). Nondisjunction can be caused by;

1. Failure of separation to occur in a pair of homologous chromosome during meiosis I.

2. Failure of separation between sister chromatids in Meiosis II.

3. Failure of separation between sisters chromatids in mitosis.

This gives the 45,X in Turner syndrome. The other X chromosome is partly or completely missing. Hence, the female is born with only one X chromosome.

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Please help me with social studies ​
bogdanovich [222]

The three biggest problems were rain, disease, and transportation.

The rain, particularly during the wet season, would cause mud slides and make the ground very dangerous. Weeks of work were often wasted every time a mud slide filled in areas previously dug out. This was most evident in the Culebra Cut. The cut was an artificial valley, not too far from Panama City, that had to be dug two feet wide for every foot deep. It was considered one of the biggest engineering feats of the time. The cut was an early adopter of terracing for that reason.

Diseases such as malaria, yellow fever, cholera, and dengue fever were transmitted by mosquitos. While the French were building the canal, disease took a massive hit on the labor, killing thousands of able-bodied men. It was a long time before officials realized that standing water was attracting the mosquitoes. When the Americans took over the project, they made an enormous effort to remove all bodies of water from the cities. Hospital bed posts were submersed in water to prevent termites. People kept barrels for water outside their homes. All of that water had to be covered or removed. They were able to get the diseases under control, but it’d be a long time before cures and pesticide efforts were put in place. Panama still employs trucks that spray for mosquitoes regularly.

The third problem was the transportation of men, supplies, and the soil as it was being removed. The construction of a railway greatly helped by hauling millions of tons of men, equipment, and supplies, but more importantly hauled the hundreds of millions of cubic yards of material removed from the canal cuts.

I highly recommend reading the book The Path between the Seas: The Creation of the Panama Canal, by David McCullough. It is loaded with highly detailed information from the very beginning of the canal construction through the completion of the project 44 years later,

Hope this helps!

5 0
3 years ago
When did the arabs live in palestine
saveliy_v [14]

Answer:

The term "Arab", as well as the presence of Arabians in the Syrian Desert and the Fertile Crescent, is first seen in the Assyrian sources from the 9th century BCE (Eph'al 1984). Southern Palestine had a large Edomite and Arab population by the 4th century BCE.

3,000 to 2,500 B.C

Explanation:

6 0
2 years ago
Who did Hoover rely on to give aid to the poor? The subject is about the Great Depression
astraxan [27]
The businesses but that failed
6 0
3 years ago
Two adjetives for the battle of bunker hill
mafiozo [28]

Answer:

Two adjectives: encouragement and confidence

Another word is determination

Explanation:

It’s the first real battle in the revolution, yet the British won. The patriots got a huge self confidence boost, being determined that they could fight in this war. It encouraged many others to join.

8 0
3 years ago
Because laws represent the interests of those in power, crimes committed by the upper classes are typically treated more lenient
alex41 [277]

Answer:This argument is consistent with: conflict theory.

Explanation:

Conflict theory: is a theory that states that the dysfunction of society is due to categorising people into groups based on their status and this is harmful to society because it creates inequality whilst the rich keep getting richer and better treatment in the expense of the poor.

It focuses on how resources are unequally distributed, the abuse of power by those who hold prestigious positions , and inequality which is due to status differences based on who has more money or based on race and other factors. Those who have power and resources in the society are able to use them to influence how they get treated and rule over those who have less. There is a competition in resources according to the conflict theory and some seem to extract more resources for just themselves .

7 0
3 years ago
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