Exam 29: Development and Inheritance

During amphimixis,

The umbilical cord contains the yolk sac, the placental blood vessels and the

Stretching of the cervix causes an increase in the blood levels of

Figure 29-1 Early Human Development Use Figure 29-1 to answer the following questions: -Identify the stage labeled "8."

Which of the following places the stages of labor in the correct order?

Non-sex chromosomes are called

Sperm release ________ to break down the bonds between adjacent follicle cells surrounding the oocyte.

Which of the following is not part of oocyte activation?

The ________ is formed by the allantois, blood vessels, and yolk sac.

In-Text Figure Based Questions -What is the name of the third germ layer that forms during gastrulation? (Figure 29-4)

The uterine epithelium is broken down by which structure of the blastocyst?

In simple autosomal inheritance, phenotypic characters are determined, or controlled, by

An individual's karyotype shows trisomy 21. This is an example of a

Which embryonic germ layer forms the brain and spinal cord?

Figure 29-2 Fetus at 10 Weeks Use Figure 29-2 to answer the following questions: -During the second trimester, the mesoderm on the outer surface of the amnion contacts the mesoderm on the inner surface of the chorion and fuse to form the ________ membrane.

Polyspermy results in

Mammary gland development requires a combination of all of the following hormones, except

The processes that occur in the pre-embryonic period are

The outer layer of the blastocyst that can penetrate the endometrium is the

Block to polyspermy is prevented by the ________ reaction.