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NARA [144]
2 years ago
11

Shane, an 11-year-old boy, has autism spectrum disorder (ASD). His fraternal twin brother, Topher, is at higher risk for having

ASD than would be the case if Topher were just a sibling. Why is that so?
Biology
1 answer:
Veronika [31]2 years ago
7 0

Answer:

Genetic and Environmental Factors

Explanation:

Autism Spectrum Disorder (ASD) is a developmental disorder that affects how a person behaves, interacts with others and learns.

Studies have found that when one identical twin has ASD, chances are extremely likely that the other twin has it, too.

Genetic and environmental factors are connected. Environmental factors includes such influences as parental age at conception, maternal nutrition, infection during pregnancy and premature.

For example, genetically, fraternal twins share about half of their genes. Because these twins shared a womb, they are more likely to have had the same environmental influences than non-twin siblings.

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During the development of the fetus, the mechanism by which the mammalian skeletal system gives rise to tissues of the bone is termed as endochondral ossification. Endochondral ossification also plays an essential role at the time of the development of the long bones length, rudimentary generation of the long bones, and healing of bone fractures naturally.  

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Explanation:

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2 years ago
A Man and his wife have three sons. What is the probability that their next child will be a girl?
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