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6 Apr 2018

Genetically, how might a doctor be able to determine if a fetus is likely to grow up to be a person with a unibrow?

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Related questions

How does human cloning compare with other reproductive technologies such as in vitro fertilization, hormone treatments, or other forms? Pick one or two of the topics below to discuss in your original discussion post. Make sure you include scientific terms from the unit to support your statements. Your response to another person should be about a different topic than the one you discussed. Do you feel that cloning should be allowed: As a way for two parents who both carry the gene for a severe genetic disease and who will not accept abortion of an affected fetus to have a genetically related child guaranteed to be free of the disease? As a way for parents to be able to choose many characteristics of their children, including gender, hair and eye color, metabolic rate (i.e., the tendency to be overweight), and IQ? As a way to “bring back” a child who was killed accidentally? As a way to “bring back” an important or influential person (e.g., Albert Einstein or John F. Kennedy)? As a way to generate cells that could help heal a person suffering from a severe brain or spinal cord injury? As a way to generate new heart tissue for a person suffering from severe heart disease—tissue that would not require immune suppressants to fight rejection because it would be genetically identical to the rest of the body? As a way to allow new types of research into cures for diseases?

Testosterone creams and gels are prescribed to individuals whose own gonads are not able to produce sufficient testosterone for the production of male secondary sex characteristics. Warnings on these drugs caution pregnant females against handling the drugs, and against touching the skin of a person who has recently applied them. How could exposure to testosterone in this manner affect the development of an XX fetus? What organs/structures would be affected and why?

Genetics question on genetic dwarfism:

Seven months pregnant, an expectant mother was undergoing a routine ultrasound. While prior tests had been normal, this one showed that the limbs of the fetus were unusually short. The doctor suspected that the baby might have a genetic form of dwarfism called achondroplasia. He told her that the disorder was due to an autosomal dominant mutation and occurred with a frequency of about 1 in 25,000 births. The expectant mother had studied genetics in college and immediately raised several questions. How would you answer them?

1. How could her baby have a dominantly inherited disorder if there was no history of this condition on either side of the family?

2. Is the mutation more likely to have come from the mother or the father?

3. If this child has achondroplasia, is there an increased chance that their next child would also have this disorder?

4. Could this disorder have been caused by X rays or ultrasounds she had earlier in pregnancy?

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