Exam 3: Heredity and Environment

In China, a "one-child" policy implemented around 1979 cut the birth rate in half. Although the intended goal of reducing poverty was achieved, several unintended consequences were identified. All the following were unintended consequences EXCEPT for _____.

All humans have about 100,000 genes.

Dizygotic twins have _____ of their genes in common.

Upon the completion of the Human Genome Project, several surprise findings were made, including all the following EXCEPT that _____.

A high school science teacher asks the students which cells could be used to produce any other cell in the body. The correct answer is _____ cells.

Birth defects and later illness _____ with in vitro fertilization (IVF).

Each zygote has _____, or biological material that provides energy for the cell.

An individual with an extra chromosome on the 21st pair of chromosomes has _____.

Height is probably influenced by _____ genes, each contributing a very small amount.

Jackie rushed into the house after school and announced to her parents, "My personality is _____! So many genes make me who I am!"

Michelle and Greg are having a baby and are hoping for a boy. Who is responsible for determining the sex of the baby?

One aspect of both nature and nurture that profoundly affects each person is the _____, which refers to all microbes that live within every part of the body.

Every human has at least _____ autosomes and one X chromosome.

In _____, the first IVF baby was born.

Define autosomes, and differentiate the terms homozygous and heterozygous.

When an ovum is surgically removed from an ovary, fertilized in a glass lab dish, and then inserted into the uterus, this process is referred to as "_____."

Harold and Heather are dizygotic twins. They are the result of _____.

_____ cells are able to produce any other cells.

Identical twins are also called _____ twins.

After twins are conceived, their chance of survival until birth depends on the prenatal circumstances. An early sonogram might reveal two developing organisms, but later only one embryo continues to grow. This is referred to as the "_____ twin phenomenon."