Exam 2: The Start of Life: Prenatal Development

During the germinal stage,the fertilized egg is now called a(n)___________ and travels toward the uterus,where it becomes implanted in the uterus's wall.

What illegal substance,when used by pregnant women,led to an epidemic of thousands of "crack babies"?

Name the process of identifying genetic defects by examining a small sample of fetal cells drawn by a needle inserted into the amniotic fluid surrounding the unborn fetus.

Mothers who use smaller amounts of alcohol during pregnancy place their children at risk of

Cynthia's mother will undergo a procedure to ensure her next child will be free of Fanconi anemia.Which of the following procedures will be used?

The process of _______ accounts for the replication of most types of cells,so nearly all the cells of the body will contain the same 46 chromosomes as the zygote.

Jose has an extra chromosome on the twenty-first pair of chromosomes.The disorder was once referred to as mongolism.This will cause him to have

Which "Big Five" personality trait refers to the degree to which a person seeks to be with others,to behave in an outgoing manner,and generally to be sociable?

It is clear that the father's sperm does not determine the sex of the child.

Genetic testing does not raise difficult practical and ethical questions.

Relatively few traits are governed by a single pair of genes.Most traits are the result of polygenic inheritance.

The _______ stage formally starts when the differentiation of the major organs has occurred.

Evan and Evelyn are twins but are not genetically identical.They are ________ twins.

What sexually transmitted disease can be communicated to the child as it passes through the birth canal to be born?

When gametes are formed in the human body,this is called

In the embryonic stage,the nervous system begins to function around the ___ week,and weak brain waves begin to be produced.

Tera has a disorder that is untreatable and produces blindness and muscle degeneration prior to death.Her diagnosis would be

When a child receives different forms of a certain gene from his/her parents,he or she is said to be

What is the name of the new cell formed by the process of fertilization?

The hormone __________ is produced in ________,which some scientists speculate may lead to differences in male and female brain structure,and later variations in gender-related behavior(s).