Exam 42: Animal Development

What makes the cells of a developing embryo differentiate into various types of cells?

The hormone ________ promotes both mammary gland development and milk production.

The nervous system forms from the:

A human embryologist examines a 3-week-old embryo and notices that it has not developed a notochord. If the embryo survives, it will lack:

In organisms that develop in eggs, the ________ serves as a food source for the embryo.

Based on experiments with amphibian embryos, Spemann found that:

In humans, fertilization occurs in the:

The ________ are finger-like extensions from the fetal membranes that extend into the endometrium.

________ genes code for transcription factors that regulate the transcription of other genes.

German measles is a very mild infection, so why is vaccination against German measles required by most colleges?

Stem cells developed by inserting genes into cells from an adult are ________ cells.

Chorionic gonadotropin is secreted by the endometrium when a woman becomes pregnant. True or False?

The blastocyst implants in the endometrium about 7 days after fertilization. True or False?

Which of these hormones promotes the secretion of milk?

If a cell lacks transcription factors, ________ will never be transcribed.

An embryo was exposed to a chemical early in its development. At birth, there is chromosomal damage to the circulatory system linked to the chemical exposure. What other organ systems should be examined for the same damage?

During development, some cells ________, or specialize in both structure and function.

What occurs during organogenesis?

Suppose a pregnant woman took a drug that causes incomplete brain formation during fetal development. When must the woman have taken the drug for this effect to occur?

After induction occurs: