Exam 43: Animal Development

A human embryo is known as a fetus after weeks.

When a researcher transplanted the nucleus of an intestinal cell from a tadpole into an egg cell whose nucleus had been destroyed, the egg developed into a normal frog. This illustrates that

One characteristic of animal development is the specialization in both structure and function that cells undergo. This is called

The developmental fate of each cell is determined by chemical interactions among cells in a process called .

Stem cells developed by inserting genes that regulate the transcription of specific genes into cells from an adult are cells.

The eggs of many reptiles contain _, which serves as a food source for the embryo.

Birds hatch out of their eggs looking like small versions of the adult. This is an example of

Early animal embryos are composed of stem cells, unspecialized cells that are capable of dividing and renewing themselves for long periods. If a stem cell divides by mitosis so that one cell eventually becomes part of the brain and the other cell becomes part of a salivary gland, the cells have

The implants in the mammalian uterus.

The mother's part of the placenta is derived from the .

Which of these hormones stimulates the production of milk?

Why should a woman who plans to become pregnant notify her health care provider of any medications she is taking?

Transplanting embryonic eye tissue into the back of a developing tadpole will cause a lens to grow on the back of the tadpole. This is an example of

Yolk sacs are found only in animals with shelled eggs.

In indirect development, the embryo hatches into a sexually immature stage called a larva.

Which germ layer forms the pancreas?

Proteins called bind to the DNA near the promoter regions where gene transcription begins.

Cells differentiate during development because

Adult stem cells derived from fat cells have been used to develop muscle and nerve cells in the lab. How is this possible?

The process by which the three embryonic tissue layers form is called .