Exam 2: Genetics and Prenatal Development

What is the leading cause of low birth weight in developed countries?

Fertilization is most likely to occur when intercourse occurs ____.

Give an example of pregnancy advice that reflects cultural wisdom in traditional cultures.What is a plausible explanation that this advice is passed down from generation to generation?

Many traditional cultures do not have access to trained physicians but may rely on which of the following individuals during the prenatal period?

A behavioral geneticist would use which of the following research methods to study the influence of genetics?

As a result of evolutionary history,which of the following structures is the most underdeveloped at birth?

When the ovum and sperm cells unite and fertilization has occurred,what has just been formed?

Males begin producing sperm ____,whereas females produce ova ____.

According to the text,what structure provides a protective environment in which the fetus's temperature is well regulated and protects the fetus from friction caused by the mother's movements?

Newborns weighing less than what weight are at risk for a wide range of developmental difficulties?

A friend tells you that she is on a fertility drug to increase the number of follicles during ovulation and is so excited about the possibility of having twins.Based upon the reading,would you agree that she has an increased possibility of conceiving twins?

You have likely heard people say,"The father is the one who determines the sex of the child." Explain whether or not this is true.

How many ova are present in a female adolescent's ovaries in puberty?

What type of gene,if it is present,will be expressed in the phenotype?

Fernando and Rebecca are anxious to know the sex of their baby.It would not be until the end of the ____ month of pregnancy that they can find out,because the genitalia will not have fully formed before then.

What is the process that allows mixing the combinations of genes in a single chromosome,resulting in a virtually infinite possible combination of genes?

The use of fertility drugs increases the likelihood of all of the following except ____.

Which of the following are examples of teratogens?

A person's characteristics are known as his or her ____.

What dietary substance has been found to reduce spina bifida and anencephaly?