Genetics and DNA Quiz

What is an allele?

• A nuclear cell structure that contains DNA

• An alternative form of a gene

• A method of separating molecules

• A sequence of repeating bases in DNA

What does the Combined DNA Index System (CODIS) refer to?

• A method of DNA amplification

• A genetic variation where one nucleotide is substituted for another

• The FBI’s computerized criminal DNA databases

• A picture of paired homologous chromosomes

What is the primary function of DNA phenotyping?

• To amplify tiny amounts of DNA

• To predict physical appearance and ancestry from DNA

• To separate molecules according to size

• To identify a person based on genetic code

What is electrophoresis used for?

• To identify a person based on genetic code

• To separate molecules, such as DNA, according to size

• To amplify tiny amounts of DNA

• To predict physical appearance from DNA

What is a karyotype?

• A sequence of DNA that codes for proteins

• A picture of the paired homologous chromosomes in a cell

• A method of amplifying DNA

• A type of genetic variation

What is the basic unit of DNA consisting of a sugar, phosphate group, and base?

• Polymer

• Nucleotide

• Intron

• Exon