Exam 21: Human Development and Genetics

During pregnancy, the placental hormone that inhibits contractions of the myometrium is ____________________.

A person's phenotype for a particular trait refers to the:

Normal implantation of the blastocyst takes place in the:

A person's genotype for a particular trait refers to the:

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

The average gestation period lasts:

Which statement is NOT true of the placenta and umbilical blood vessels?

The placental hormone that maintains the corpus luteum during early pregnancy is:

The appearance or expression of a particular trait in a person is called the:

The genes for sex-linked traits are found on the ____________________ chromosome.

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

The embryonic membrane that forms the first blood cells is the ____________________.

For people, curly hair is dominant and straight hair is recessivE.Genetics problem: Mom is heterozygous for curly hair and Dad has straight hair. The percent chance that a child of theirs will have straight hair is ____________________.

A person who has two similar genes for a particular trait is said to be ____________________ for that trait.

In the early embryo, the mesoderm gives rise to the:

In the early embryo, the endoderm gives rise to the:

For people, curly hair is dominant and straight hair is recessivE.Genetics problem: Mom is heterozygous for curly hair and Dad has straight hair. The percent chance that a child of theirs will have curly hair is ____________________.

For people, curly hair is dominant and straight hair is recessive. Mom and Dad both have curly hair, and their first child has straight hair. What does this tell us about Mom and Dad?

After birth, the baby's ductus venosus ____________________, because the umbilical cord has been cut and blood no longer enters the baby from the ____________________.

A person who is homozygous for a particular trait has: