Chapter 7 Review

Population genetics is the study of the variation in genes among a group of individuals.

• True

• False

Tandem repeats of short DNA sequences (2-5 pairs) with varying numbers of repeats between individuals is called ______________________________.

• VNTR

• STR

• PCR

This is a molecule that cuts DNA at a specific sequence.

• restriction enzyme

• DNA probe

• gene

• electrophoresis

In 1984, Dr. Alec Jeffreys at the University of Leicaster observed that DNA from different individuals contains different polymorphisms. His laboratory developed a technique for isolating and analyzing these variable areas that is known as ___________________________________.

• DNA quantifying, or DNA profiling

• DNA fingerprinting, or DNA profiling

• DNA sorting, or DNA profiling

• DNA investigating, or DNA profiling

The total amount of DNA in a cell, which is contained in chromosomes and mitochondria, is called the human _________________.

• gene

• allele

• genome

How many pairs of chromosomes are found in the nucleus of a human cell?

• 46

• 26

• 23

• 28

The DNA in chromosomes contains approximately ____________.

• 3 million base pairs

• 3 thousand base pairs

• 3 billion base pairs

• 1 base pair

To calculate the percentage of people who have a particular allele, population studies are conducted to collect data.

• True

• False

The analysis of chromosomes, which was originally developed by geneticists, is known as __________________________.

• karyotyping

• archetyping

• genetics

• none of these

Genetic information is stored in molecules of DNA making up structures called _________________________.

• blueprints

• genetic material

• DNA fingerprinting

• chromosomes