Exam 2: Biological Foundations: Heredity, Prenatal Development, and Birth

Jeanette is concerned about getting pregnant with her husband, because she is afraid that she will pass on her recessive gene for a sickle cell disease and that her child will develop this condition. Based on what you know about the principles or dominant and recessive inheritance, what would you advise Jeanette?

Why would it be fair to say that physicians Grantly Dick-Read and Ferdinand Lamaze revolutionized approaches to childbirth?

When looking through a microscope at an entire set of human male chromosomes, how would you be able to differentiate an autosome pair from a sex chromosome pair?

Wilma is afraid of the pain involved in delivering her baby. Are childbirth classes likely to help her?

How many stages of labor are there?

A child who weighs less than 1,000 grams at birth would be described as being a "low birth weight" baby.

Mel is at the obstetrician's office with his girlfriend Denise, who is pregnant with their child. They have just started the ninth week of the pregnancy, and the doctor explains to them that the unborn child's brain has developed distinct structures and is already beginning to regulate certain body functions. Based on what you know about prenatal development, you know that the period of the ________ has just begun.

Of the three types of prenatal screenings discussed in the textbook, ________ requires the longest wait for results. This is because the genetic material cannot be evaluated until enough cells have reproduced for analysis.