Exam 2: The Beginning: From Conception to Birth

About 20 percent of all children have difficulties that could be connected to teratogens.

Dr.Margo studies how environmental factors affect gene expression.She studies:

A variation that makes a gene different in some way from other genes for the same characteristics is a(n):

A person's appearance,behavior,and brain and body functions combine to form the _____.

Within hours after conception,the first 23 pairs of chromosomes within the zygote _____,forming two complete sets of genes.

If the 23rd pair of chromosomes is _____,the individual will be male.

A special case of the dominant-recessive pattern occurs with genes that are X-linked or located on the _____ chromosome.

One aspect of both nature and nurture that profoundly affects each person is the _____,which refers to all bacteria that live within every part of the body.

One nation that forbids prenatal sex selection is _____.

Jackie is 5 years old.She has been diagnosed with ADHD and shows signs of learning problems.Her pediatrician suggests that Jackie's problems could be the result of prenatal exposure to _____,though he stresses that the link is not straightforward at this time.

Down syndrome is also called:

Home births are more common in European nations than in the United States.

By age 3,children born by cesarean section are more likely to:

A developing human organism from the start of the ninth week after conception until birth is called the "______."

The cognitive deficits caused by the genetic condition of _____ are the MOST common form of inherited intellectual disability.

The most common extra-chromosome condition that results in a surviving child is _____.

Individual A's 23rd pair of chromosomes is XY.Individual A is:

Each human has a total of about _____ genes.

Marissa had a baby three weeks ago.She has been feeling sad and inadequate as a mother,which has made caring for her newborn difficult.Marissa may be experiencing:

Which of the following is NOT an example of a newborn reflex?