Meiosis and Genetics

The macromolecule responsible for storing and transmitting genetic information is

• DNA

• Proteins

• Lipids

• Carbohydrates

If a sample of DNA has 20% guanine, how much thymine is present?

• 20%

• 30%

• 50%

• 100%

A random change in the DNA code is called a

• mutation

• DNA replication

• conversion

• transcription

An ___________ mutation involves the addition of an extra base in the DNA while a ___________ mutation involves the removal of a base.

• deletion/substitution

• substitution/insertion

• insertion/deletion

• deletion/insertion

Mitosis creates diploid cells while meiosis creates haploid cells.

• True

• False

Human body cells, such as skin and brain cells, are diploid. Therefore, they contain ________ chromosomes.

• 23

• 46

• 92

• 2

Gametes, or sex cells, are haploid. Therefore, they contain _______ chromosomes.

• 2

• 23

• 46

• 92

The egg cell of a fruit fly contains 8 chromosomes. How many chromosomes would its body cells contain?

• 4

• 8

• 16

• 32

A cell that contains two copies of each chromosome is known as a _________ cell.

• Diploid

• Haploid

A cell that contain one copy of each chromosome is known as a _________ cell.

• Diploid

• Haploid