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Harrizon [31]
3 years ago
5

When a child is born with down syndrome when did the mutation occur

Biology
1 answer:
bazaltina [42]3 years ago
7 0

Answer:

Down syndrome occurs when the nondisjunction occurs with Chromosome 21. Meiosis is a special type of cell division used to produce our sperm and egg cells.

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scientific investigations often lead to the formulation of new scientific questions. charle’s darwin reviewed his observations a
Sergeeva-Olga [200]

The question that Charles Darwin would be prompted to ask on his voyage is as follows: can selection in nature also lead to a new species over time?.

<h3>Who is Charles Darwin?</h3>

Charles Darwin was a British naturalist/scientist and founder of the theory of evolution by natural selection.

He is best known for his award-winning work on the origin of species, which he published in 1859. Darwin developed his theory from findings he made following a five-year expedition on board HMS Beagle.

According to this question, Darwin reviewed his observations after he returned home from his voyage studying the selective breeding of pigeons.

The question that Charles Darwin would be prompted to ask on his voyage is as follows: can selection in nature also lead to a new species over time?.

Learn more about Charles Darwin at: brainly.com/question/16489282

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3 0
2 years ago
Which organism would not carry out cell respiration
olga nikolaevna [1]

Answer:

D. Bear

Explanation:

The answer is bear because a bear is an animal. Everything but animals can carry out cellular respiration.

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3 years ago
Describe how hormones work and explain why they are important?.
FinnZ [79.3K]

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Hormones are molecules produced by the endocrine system that send messages to various parts of the body. They help regulate your body's processes, like hunger, blood pressure, and sexual desire. While hormones are essential to reproduction, they are fundamental to all the systems of your body.

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3 years ago
When alzheimer disease sets in early and impacts those under age 60, the final phase of the disease typically occurs around?
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When alzheimer disease sets in early and impacts those under age 60, the final phase of the disease or death typically occurs around 3 to 5 years after the first signs of the disease appear. Alzheimer's disease is the most common type of dementia, which is represents the memory loss and other cognitive abilities serious enough to interfere with normal life. Alzheimer accounts for about 60 to 80 percent of dementia cases.
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The most important result of the cell cycle is two (identical -or- very different) cells.
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Two identical cell because the main purpose of the cell cycle is to make two identical cell.
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