Exam 3: Seciton 3: Beginnings: Heredity and Environment

On the 23rd pair of chromosomes, _____ have two X chromosomes.

Which female is more likely to naturally conceive dizygotic twins?

Every person begins life as a single cell, which is called a _____.

Eight-year-old Joe has no difficulty seeing things near him but sometimes struggles to see things in the distance. Joe gets his eyes checked and is told that he does not yet need corrective lenses for nearsightedness. Instead, drawing on current research, the ophthalmologist advises that he _____.

Each human body cell contains _____.

The first 22 chromosomes contain hundreds of genes in the same positions and sequence. If the code of the gene from one parent differs from the code on the same gene from the other parent, the gene pair is _____.

Identical twins are also called _____ twins.

Alice loves to share information that she has learned from school with her parents. She came home one day and, at dinner, told her family she learned about cell differentiation in science class. The information she tells them is correct, so over dinner she told them that once cells differentiate _____.

_____ cells are able to produce any other cells.

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

An individual's inherited biochemistry reacts to alcohol in different ways causing various reactions in humans, including all of the following EXCEPT _____.

Couples can select the sex of a child by all of the following methods EXCEPT _____.

The one-celled zygote copies itself again and again and changes names as it multiplies. These names include all of the following EXCEPT _____.

Due to biological sex (XX or XY) women become drunk on _____ than men.

Twins who are the same sex and are similar in appearance and traits are _____.

Differences among people begin with alleles, which can be caused by transpositions, deletions, or repetitions of base pairs, making some genes _____.

The _____ was a worldwide effort to map the complete human genetic code.

If an individual needed an organ donation, which organ donor would be the best match for this individual?

Epigenetics means that a trait _____.

Down syndrome is also called _____.