Chromosome Lecture Questions

What are the four types of nucleotides labeled by scientists?

• A, C, T, G

• G, H, I, J

What does a gene usually code for?

• A nucleic acid

• A protein or a group of proteins

What is a chromosome made of?

• An entire chain of DNA along with a group of stabilizing proteins

• A collection of cells

How are chromosomes structured inside a cell for most of its life?

• In a compact, spherical shape

• In a loose, noodle-like structure

How many pairs of chromosomes do humans typically have in each of their cells?

• 36 pairs

• 23 pairs

From whom does one member of each chromosome pair originate?

• One from the mother, the other from the father

• Both from the mother

What happens to chromosomes when a cell prepares to reproduce?

• They are copied and then condensed like spools of yarn

• They expand into a larger size

What can mutations in the genetic code cause?

• Changes in protein shape or function

• No noticeable changes

What represents brand new genetic information?

• Old mutations passed down for generations

• Unique mutations to an individual

What is the role of histones in a chromosome?

• They are wrapped with a string-like structure of DNA

• They transport the chromosomes