20. Development

Which of the following events typically occurs during the second trimester of human fetal development?

During which stage of pregnancy are all major organs formed in a developing human embryo?

People with Kartagener's syndrome suffer from a variety of ailments, including the intriguing condition known as situs inversus, a reversal of the abdominal and thoracic organs. This condition occurs because of __________.

In mammals, the __________ facilitates implantation in the uterine wall.

Up to the eight-cell stage, the blastomeres of a mouse embryo can each form a complete embryo if isolated. This indicates that __________.

In animal development, which of the following processes results in the formation of the three primary germ layers?

As an animal develops, organs form and the body transforms into a shape typical of the species in a process called __________.

Which of the following processes occurs in animal development but not in plant development?

During cleavage the single large zygote is converted into a __________.

Which of the following is true of meroblastic cleavage?

The human brain develops from __________.

What is the embryonic origin of the lining of the digestive tube?

Which of the following correctly represents the typical sequence of early animal development?

Which of the following extraembryonic membranes functions in gas exchange and encloses a chamber for the deposition of wastes of a bird embryo?

Which of the following events occurs only during organogenesis?