Exam 3: Prenatal Development and Birth

A normally developing fetus has reached a length of 12 inches and weighs about one pound. Using ultrasound it is possible to tell if the fetus is male or female. In which stage of development is this fetus?

Of the following, which is a true statement about the influence of heroin and methadone upon prenatal and infant development?

Which of the following is an autosomal dominant disorder?

Skylar has brown eyes, thin lips, and curly brown hair. Which of these traits is polygenic?

At what point does the fetal period begin?

How are newborn infants affected by medications given to the mother during the birthing process?

Phenylketonuria is an example of which of the following?

Which of the following is associated with maternal malnutrition?

Which of the following is true of identical twin studies?

Not long after Gloria found out she was pregnant, she began having pain. When she went to her doctor, she was told that the zygote had implanted in her fallopian tube rather than in her uterus. What type of pregnancy is this?

Which of the following individuals has the greatest risk for bearing a child with trisomy 21?

People who use hypnobirthing as a method of drug-free delivery believe that ________ is a natural anesthetic.

Which of the following serve to hold neurons together?

Assume that you are a young woman attending college. You plan to wait until you finish your graduate degree and are well established in a career before having children. What recent research findings should you consider in this decision?

Color blindness is considered a sex-linked disorder because the gene is only carried on the ________ chromosome.

What is the tern for the pattern of inheritance in which many genes influence a trait?

A blastocyst is floating inside of Daria's uterus. In what stage is Daria's pregnancy?

Explain how it is possible that identical twins can exhibit differences in phenotype.

Most sex-linked disorders are caused by which of the following?

Give an example of physical traits that could result from multi-factorial inheritance.