Exam 2: Biological Beginnings

The period of prenatal development that occurs 2 to 8 weeks after conception.During this time,the rate of cell differentiation intensifies,support systems for the cells form,and organs appear.

The germinal period of development takes place in the ________ after conception.

Juanita is having a normal pregnancy,and everything is developing well.She has,however,recently picked up an infection,and bacteria have accumulated in her bloodstream.We know that most likely:

The period of development that includes the creation of the zygote,attachment to the uterine wall,and the continued cell division is known as the ________ period.

The current view that people may have a propensity for developing many complex behaviors is known as

Describe the three layers of cells that develop at the beginning of the embryonic period.

A prenatal test designed to assess whether a fetus is developing normally.With this procedure,high-frequency sound waves are directed into the woman's abdomen.The echo from the sounds is transformed into a visual representation of the fetus's inner structures.

Which of the following disorders is LEAST likely to happen to a baby who's mother is 16 to 34 years old?

List at least three paternal factors that can impact fetal development.

About ________ of all children who are born through the birth canal of a mother with active genital herpes die.

At birth,the average American baby weighs ________ pounds and is approximately ________ inches long.

Women have a ________ chromosome pairing,and men have a ________ chromosome pairing.

Sidney is expecting her first child.She has just recently begun to feel kicking movements.Sidney is most likely in the ________ month of her pregnancy.

List at least three effects of nicotine on fetal development.

Sandra excels in reading and spelling but struggles with mathematics.She is shorter than her peers and was born without ovaries.Sandra most likely has

Mateo is on a strict diet because his parents are aware that he cannot metabolize a certain amino acid.Buildup of this amino acid in his system could result in mental retardation.Mateo has

The name given to the process of organ formation during the first 2 months of prenatal development.

In this genetic disorder,the body's red blood cells take on a hook shape instead of the normal round shape.

By the end of the fifth month,the fetus weighs approximately ________ ounces.