Exam 21: Human Development and Genetics

In the embryo, the liver and lungs are derived from the ____________________.

An ectopic pregnancy is one in which:

A gene is a specific part of ____ and is the genetic code for one ____.

The autosomes a person has are:

The embryonic membrane that has villi to provide nourishment for the early embryo is the:

Which statement is NOT true of human chromosomes?

A pair of chromosomes that has maternal and paternal genes for the same traits is said to be a ____ pair.

During the ____________________ stage of labor, the amniotic sac ruptures.

In the gestation period, the period of fetal growth lasts:

Fertilization usually takes place in the:

The site of exchanges between maternal blood and fetal blood is the:

The embryonic membrane that contains fluid to cushion the embryo is the:

During an average gestation period, the period of embryonic growth lasts ____________________ weeks, and the period of fetal growth lasts ____________________ weeks.

For people, curly hair is dominant and straight hair is recessive. Genetics problem: Dad has straight hair and Mom is heterozygous for curly hair. The chance that their child will have straight hair is:

During gestation, at the end of the period of embryonic growth:

For people, having dimples is dominant and having no dimples is recessivE.Genetics problem: Mom has no dimples and Dad is homozygous for dimples. The percent chance that a child of theirs will have dimples is ____________________.

A zygote begins a series of cell divisions called:

Which of the following statements are true of fertilization and embryonic development? (Read carefully and select all of the correct statements.)

Blood is carried from the placenta to the fetus by the:

Genetics problem: Mom is a carrier of red-green color blindness and Dad is red-green color-blind. What is the chance that their daughter will be a carrier?