Kozian Forensic Science DNA

In Eukaryotes, which organelle(s) is(are) DNA found in?

• nucleus
• vacuole
• mitochondria
• both nucleus and mitochondria

Which of the following best describes a DNA molecule?

• double helix
• contains ribose
• made of amino acids
• contains Uracil

What are the 4 nitrogen bases?

• adenine, thymine, cytoplasm, and guanine
• adenine, thymine cytosine, and guanine
• adenine, thymine, cytosine, and gylcerol
• adenine, thymine, cytosine, and glucose

Adenine bonds with ______________.

• Guanine
• Thymine
• Cytosine
• Adenine

What is a Gene?

• A segment of RNA that encodes for a protein
• A chromosome
• A segment of DNA that encodes for a protein
• Your genome

What is a gene locus?

• Codes for a protein
• Produces mRNA
• Specific location of a gene on a chromosome.
• A bug that looks like a grasshopper.

Which of the following does NOT describe this picture?

• humans' 46 chromosomes
• one gene
• the human genome
• humans' 23 pairs of chromosomes

Alleles are

• different versions of the same gene
• different genes for the same trait
• different chromosomes for the same gene
• different genes for the same chromosome

What is a recessive allele?

• A trait that is always shown (capital letter)
• A trait that can be hidden (lower case letter)
• Alleles that are the same
• Alleles that are different

What is a dominant allele?

• A trait that is always shown (capital letter)
• A trait that can be hidden (lower case letter)
• Alleles that are the same
• Alleles that are different