Exam 2: The Biology of Development

Differentiate between pleiotropic and polygenic genes.

List the major risk factors for preterm birth.

While pregnant, Juana is exposed to a teratogen known to affect the heart of the developing organism.The effects will likely be most severe if the exposure occurred during the:

Some unspecialized cells develop into brain cells before birth.This is an example of ________ development.

Waddington described changing cells undergoing a process of ________ through which they get committed to becoming certain types.

Having a right and left kidney, right and left ear, and right and left arm are all examples of:

Describe the structure of a neuron.

Describe the structure of DNA.

Which is a possible base pair?

Madison is 11 years old.In the coming years, which part of her brain will experience dramatic changes?

William is a veteran who has experienced a traumatic brain injury.This injury has affected his language, organizational capacity, and regulation of emotion.Which region of the brain is most likely affected by the injury?

________ is a fatty substance that coats the axon and speeds message transfer.

During which period of prenatal development does the heart begin to beat?

Describe dominant-recessive inheritance and provide an example.

Demetrius has an extra X chromosome.His condition is referred to as:

The brainstem is concerned with all of the following EXCEPT:

In most organisms, the long DNA molecules are stored in the cell nucleus as tightly wound, highly compact:

Which is the most plausible explanation for the increase in risk taking during adolescence?

What does the phrase "ontogeny recapitulates phylogeny" mean?

Differentiate between meiosis and mitosis.