Exam 22:Human Development and Genetics-Part B

During the second stage of labor,________________________________.

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 _________________.

The hormone hCG is produced by the ____________________ of the embryo,and its effects are on the ________________________ in the ovary.

In the embryo,the bones and muscles are derived from 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 ______________.

During the third stage of labor,____________________________.

The genes a person has for a particular trait are called the _______________________.

The possibilities for the expression of a gene are called _____________________.

Fertilization of an ovum usually takes place in the ______________________________.

Genetics problem: Mom is type O and Dad is heterozygous for type A.The percent chance that a child of theirs will have type A blood is __________________.

The sex chromosomes in men are called _________________.

The union of human _____________ and _______________,each with ___________ chromosomes,forms a zygote.

During pregnancy,the hormones that prepare the mammary glands for lactation are __________________________ and ________________________.

The umbilical vein carries blood from the _____________________ to the ____________________________.

The umbilical arteries carry blood from the _____________________ to the _________________________.

The blastocyst is an early embryonic stage,and the cells of the inner cell mass are ________________________,because they are not yet specialized.

In the placenta,nutrients are taken into fetal vessels by the process of _____________________.

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

Genetics problem: Both Mom and Dad are heterozygous for type B blood.The percent chance that a child of theirs will have type O blood is _________________.

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