Mitosis Bea

How many chromosomes are found in each cell of your body (excluding gametes)?

• 46

• 23

• 40

• 36

What is the relationship between DNA and chromosomes?

• Chromosomes are made of DNA
• DNA is made of chromosomes
• DNA and chromosomes are the same thing.
• All of the above are correct

A __________ is a segment of DNA that codes for a particular protein, which leads to a particular trait.

• Gene
• Allele
• Codon
• Nucleotide

Why are your chromosomes arranged in pairs?

• Because DNA is double stranded.

• Because paired chromosome can divide easier.

• Because you get one from your mom and one from your dad.

• None of the above

Which of the following statements about chromosomes is correct?

• Chromosomes are long, thread-like structures

• Chromosomes are found in the nucleus of all cells in the human body

• Chromosomes contain DNA

• All of the above

The picture shows 46 chromosomes taken from a human:

• Male, because there are two X chromosomes

• Male because there is an X and a Y

• Female because there are two X chromosomes

• Female because there is an X and a Y

What is chromatin?

• A fully condensed chromosome ready for cell division

• A type of cell that contains genetic information

• A protein that helps in the formation of chromosomes

• A semi-condensed form made up of DNA plus proteins

What structure do DNA and histones form in chromatin?

• A double helix structure

• A bead on a string-like structure

• An X-shaped structure

• A helical coil structure

What happens to the chromatin material when a cell prepares to divide?

• It duplicates into identical cells

• It condenses into chromosomes

• It dissolves into the cytoplasm

• It remains in a semi-condensed form

What are sister chromatids?

• Two different chromosomes joined at the center

• Two identical chromosomes joined at the center

• The original chromosome and its copy joined at the center

• Two unrelated chromosomes that happen to be next to each other