Genetics Year 10 - PRS

1. 1. Recall what "DNA" stands for.

• Deoxyribonucleic acid

• Deoxyribosenucleic acid

2. 2. Blue, brown and green eyes are all examples of a ...

• nucleic acid

• trait

• nitrogenous base

3. 3. DNA is arranged in a double helix. While it is physically tiny, if the DNA from just one of your cells was unwound, it would measure two metres in length! How many strands of DNA are there?

• 1

• 2

• 3

• 4

4. 4. What does the double helix shape of DNA resemble?

• a straight line

• a long spiralling string

• a wound up coil

5. 5. Recall where DNA is located in the cell.

• Golgi apparatus

• Nucleus

• Cell membrane

• Cytosol

6. 6. State where DNA can be found in your body.

• in every nucleated cell

• in muscle cells

• in brain cells

• in heart cells

7. 7. Genes are lengths of DNA that...

• wrap around each other like twisting strands of a string.

• carry the information that determines your traits.

• are located within the ribosomes of cells.

There are thousands of ______ located on your DNA.

• alleles

• genes

• chromosomes

Genes are _________ which come one after another like beads on a necklace.

• lengths of chromosomes

• lengths of DNA

Select the option that best finishes the following sentence.

The chromosomes within a cell's nucleus ensure that ...

• any new cells will carry the trait for the eye colour that they want

• genetic material is copied and distributed correctly when cells divide