3.2 Chromosomes

The haploid number of human chromosomes is

• 11
• 12
• 23
• 46

Each identical side of a chromosome is the 

• centromere
• chromatin
• centriole
• chromatid

Autosomes are

• chromosomes found in autotrophs, only
• chromosomes that automatically correct all errors in the DNA
• chromosomes that determine traits other than sex
• chromosomes that determine the sex of the individual

The number of nucleotides in a human cell is about

• 3000
• 300,000
• 3 million
• 3 billion

An organism's reproductive cells, or sex cells, are called _____.

• bacteria

• prokaryotes

• gametes

• pathogens

Chromosomes that are paired by size and content are called _______ chromosomes.

• homeostasis

• homologous

• matching

• sister

Body cells are also called _________ cells.

• normal

• prokaryotic

• pathogens

• somatic

Cells that contain 2 sets of chromosomes are called _________ (2n).

• diploid

• haploid

• triploid

• polyploid

In humans, the 23rd pair of chromosomes is called ___________.

• sex chromosomes

• autosomes

• homologous

• genes

The 2 male sex chromsomes are _____.

• XY

• XX