Question 1

What are some of the possible factors associated with aging?

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Question 2

Several types of untreated sexually transmitted diseases can lead to scarring in the oviducts of the female.This can potentially lead to infertility because the sperm cannot get to the egg that has been released.What options might a female in this situation have if she wanted to conceive?

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Question 3

Certain medications that have major medical benefits can have tragic consequences when taken by a pregnant woman; for example,the drug thalidomide and the acne drug Acutane,which are both available only by prescription in this country.When a drug such as Acutane is prescribed to a female,she is also educated on the risks of becoming pregnant while on the drug and is prescribed a method of hormonal birth control to ensure that pregnancy does not occur.Suppose a woman taking this drug did manage to become pregnant.How much responsibility should be with the drug makers and physician who prescribed the medication? Should these drugs be available at all?

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Question 4

Both the nucleus in the head of the sperm and the mitochondria in the midpiece of the sperm include genetic information (DNA)about the father.The offspring,however,only contains nuclear DNA from the father but both mitochondrial and nuclear DNA from the mother.Why does the newborn lack the father's mitochondrial DNA?

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Question 5

Compare and contrast breast-feeding with bottle-feeding infants.

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Question 6

How does the nervous system change with aging?

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Question 7

It is possible for an individual to be genotypically one gender but phenotypically the opposite gender.Suppose an individual is genotypically male (XY)but has developed as a female.Explain what has happened and when it might have happened.

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Question 8

Suppose someone told you that the activities of a pregnant female have no effect on the embryo during early embryonic development because the placenta is not fully formed until later.How would you respond to this statement?

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Quiz 18: Development Throughout Life