Amoeba Sisters DNA, Chromosomes, Genes, Traits

Why did Spike, the Texas rat snake, become a classroom pet?

• The teacher wanted to study snakes for her research.

• Spike was found in the wild near the school.

• Spike's previous owner couldn't take him to college.

• The teacher wanted a unique pet for her home.

What is DNA primarily responsible for in living organisms?

• Providing energy for cells.

• Producing food for plants.

• Coding for traits and characteristics.

• Helping organisms breathe.

Which part of a nucleotide is most important for coding traits?

• The sugar-phosphate backbone.

• The double helix shape.

• The base sequence.

• The hydrogen bonds.

What is the shape of DNA called?

• Circular strand.

• Triple helix.

• Double helix.

• Single strand.

How many chromosomes do humans typically have in their body cells?

• 23 chromosomes.

• 46 chromosomes.

• 12 chromosomes.

• 92 chromosomes.