Exam 32: An Amazingly Detailed Script: Animal Development

The blastula is the stage of embryonic development in which cells migrate.

Cleavage includes the stage of development between the zygote and blastula.

During which stage of development do cells arrange themselves into three layers?

The process of fertilization produces a/an:

Programmed cell death is also known as ________.

Of the choices listed,the first event that occurs during embryonic development is:

The capacity of some embryonic cells to direct the development of other embryonic cells is called ________.

Somites are repeating blocks of ectodermal tissue.

Bicoid mRNAs are produced by the zygote.

ZPA cells of the chick embryo produce which morphogen?

Which of the following is a process by which an initial set of genes turns on a second set of regulatory genes,which eventually turns on a third set of genes?

Different cell layers may have different cell adhesion molecules.

What is the effect of higher concentration of bicoid protein in part of a fruit fly embryo?

The earliest stage of development in which cells move to particular places in the developing embryo is ________.

The blastula contains an internal structure called the archenteron.

Which of the following is a morula?

The blastocoel is the hollow cavity in the morula.

Bicoid is only one type of morphogen.

In general,the endoderm gives rise to tissues located deeper in the body than those from the ectoderm.

Two populations of cells may end up segregating themselves into different layers during development because they have different: