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Author Question: Do you think that our new capabilities in prenatal testing and genetic counseling will result in a ... (Read 90 times)

nevelica

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on: Jun 22, 2018
Do you think that our new capabilities in prenatal testing and genetic counseling will result in a decrease in the number of individuals born with serious genetic defects, or could it result in an increase? Explain your reasoning.
 
  What will be an ideal response

Question 2

Are there more recessive or more dominant abnormal genes? Explain why this is the case.
 
  What will be an ideal response


SAUXC

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Reply #1 on: Jun 22, 2018
Answer to Question 1

Most answers will note that increased testing and counseling will reduce the
occurrence of defects, because parents will usually choose either not to risk
pregnancy or to terminate an affected pregnancy. Testing will also result in a greater
ability to treat problems early, even in utero, resulting in fewer affected individuals.
However, it should be noted that prenatal testing and genetic counseling are not
flawless.

Answer to Question 2

There are more recessive abnormal genes (not necessarily known disorders) than
dominant abnormal genes, because dominant disorders are generally not passed
down as recessive genes are. This is because most dominant disorders are severely
disabling and lead the affected individual to not reproduce.


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nevelica

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Reply #2 on: Jun 22, 2018
Thank you


SAUXC

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Reply #3 on: Jun 22, 2018
No problem :)


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