DNA & Chromosomes Quiz

Which of the following pairs of bases are found in DNA?

• Adenine and Uracil

• Guanine and Cytosine

• Thymine and Uracil

• Adenine and Guanine

What is an allele?

• A type of chromosome

• A variant form of a gene

• A type of protein

• A segment of RNA

How many chromosomes are present in a typical human cell?

• 23

• 46

• 22

• 44

What is a karyotype?

• A type of gene mutation

• A diagram showing the structure of a DNA molecule

• A profile of an individual's chromosomes

• A type of cell division

What is the primary function of chromosomes?

• To store energy

• To carry genetic information

• To produce proteins

• To transport nutrients

In a karyotype analysis, what is typically examined?

• The sequence of DNA bases

• The number and structure of chromosomes

• The types of proteins produced

• The amount of RNA in a cell

Which of the following best describes the structure of a chromosome?

• A single strand of RNA

• A double-stranded DNA molecule wrapped around proteins

• A triple-stranded DNA molecule

• A single-stranded DNA molecule

How many pairs of chromosomes do humans have?

• 22

• 23

• 24

• 25

Different variations of genes are...

• Genomes

• Alleles

• Chromosomes

• Genes