Chromosomes

What shape are bacterial chromosomes?

• X

• circular

• linear

What is chromatin made of?

• DNA and protein

• carbohydrates

• DNA only

Why does DNA have to be tightly packed?

• By tightly wrapping it into chromosomes, genes are more easily accessible to make proteins.

• It goes through a trash compactor.

• It must fit in the nucleus and is more easily separated during cell division.

What is the name of the region where chromatids are joined?

• interphase

• duplication

• centromere

• mitosis

Once the chromosome is duplicated, how many chromatids are there?

• 4

• 2

• 1