Exam 2: Biological Beginnings

Most of the most important developments occur within the first ________ weeks after conception,often before the woman knows that she is pregnant.

Structures found in the nucleus of the cell that contain DNA.The human body contains 23 of these structures,arranged in pairs.

An infant that weighs less than 5½ pounds at birth.

David and Kelly are seeking help for infertility problems.Under their physician's guidance,they decide to undergo a procedure in which one of Kelly's eggs is combined in a laboratory dish with her husband's sperm.What procedure is this?

A way of holding a preterm infant so that there is skin-to-skin contact.

Emanuel is a 25-year-old African American.He constantly feels tired because of an abnormality in his blood.Emanuel has

One of the three layers of cells of the embryo.This is the inner layer of cells that will develop into the digestive and respiratory systems.

Kangaroo care with preterm infants has been found to stabilize all of the following,EXCEPT

A recessive gene can only assert itself when

Carmella,a Latina woman,is pregnant and is getting prenatal care from her doctor.If the doctor is culturally sensitive,she will include Carmella's _______ in the treatment.

List at least three signs that indicate a woman in the postpartum stage of pregnancy may need professional counseling.

List two harmful effects on the fetus and/or the newborn that are more likely to occur when the mother is an adolescent.List at least two harmful effects that are more likely to occur when the mother is 35 or older.

Using a twin study,Professor Jones has just found that identical twins were more likely both to develop a conduct disorder than were fraternal twins.He has decided to announce to the world that,clearly,conduct disorder is determined by one's genes.His colleagues suggested,however,that he use caution when interpreting these findings because

Implantation of the blastocyst to the uterine wall occurs at about ________ days after conception.

List and define/describe the three different types of low birth weight infants.

The baby's position in the uterus that causes the buttocks to be the first part to emerge from the vagina.

________ drugs act on the nervous system to alter states of consciousness,modify perceptions,and change moods.

List at least four possible causes of low birth weight in babies.

The structure that contains clear fluid in which the developing embryo floats is called the

Briefly describe why males are more likely to show the signs of an X-linked disorder,and name one.