20 Questions
What is the full name of DNA?
Deoxyribonucleic acid
Where is DNA found in eukaryotic cells?
Nucleus
Who used x-ray crystallography to determine that DNA had a spiral shape?
Rosalind Franklin
What are the components of DNA?
Long chain of nucleotides
What do genes represent?
Units of inherited material
Which nucleotide pairs with adenine in DNA?
Thymine
What is the packaging form of DNA called in eukaryotic cells?
Chromatin
What represents the rungs (horizontal rows) of the double helix model for DNA?
Nitrogenous bases
Young students often have misconceptions that DNA is controlled by what unseen material?
Proteins
What are some traits that are inherited?
Inherited characteristics called traits
What are histones?
Bead-shaped proteins that DNA is tightly coiled around
What are nucleosomes?
Structures resembling beads that DNA and histones form
How many chromosomes do human somatic (body) cells have?
46 chromosomes
What is a karyotype?
A photograph/chart of chromosome make-up used to determine if chromosomes are normal
What happens when a cell is about to divide?
All DNA in the cell has to be duplicated
What is a mutation?
Change in the DNA of an organism
What are chromosomes?
Long, invisible, tangled fibers made of DNA and proteins
What is a mutagen?
- ex. A substance/factor that causes a mutation (that is known)
What are nucleosomes?
Structures resembling beads that DNA and histones form
What happens when a cell is about to divide?
All DNA in the cell has to be duplicated
Test your knowledge of genetics and inheritance with this quiz. Learn about the passing of genetic information from one generation to the next, inherited traits, acquired traits, and early theories about genes.
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