Exam 42: Animal Development

During pregnancy,a maternal antibody transported across the placenta to the fetal bloodstream can cause a problem if the mother ____.  

Different cell lineages express different subsets of genes,resulting in _____.  

Which embryonic tissue is incorrectly associated with its derivative?  

Respond to the following statements with reference to the five terms below. -Consists of an outer layer of cells,a cavity,and an inner cell mass

During implantation,the __________ buries itself in the uterine wall.

Respond to the following statements with reference to the five terms listed below. -This is a longitudinal series of paired segments of the mesoderm.

Babies born before _____ after fertilization are considered premature.  

Snakes typically are longer than lizards due to which mechanism?  

The prenatal period begins with the ____ and ends after ______.  

Four of the following are characteristic of morphogens.Which one is the exception?  

Which stage of development immediately precedes the formation of specialized tissue and organs?  

__________,products of master genes,act as long-range signals that diffuse out from a source and form a concentration gradient.

Fertilization typically occurs in the ____.  

Human milk contains _____.  

The placenta ____.  

During development,___________________ brings ectodermal cells from the neural tube outward to their final positions throughout the body,such as the neurons of the peripheral nervous systems and melanocytes in skin.

Labor preceding birth _____.  

Respond to the following statements with reference to the five terms listed below. -This is the fertilized egg.

Figure on p. 737 Use the figure above showing the process of gastrulation to answer the following question. -The letter "C" in the accompanying figure represents ____.  

By the eighth week of human fetal development,____.