Year 10 - Biology - Skill 2 - Replicating cells

The two chromatids are joined at the ...

After replication, the chromosome has two ...

Before replication, the chromosome does not have two ...

What process is shown in the diagram?

What happens during Step 1 of DNA replication?

• The parent DNA molecule starts to ‘unzip’ at one end.

• Copying of the DNA molecule has begun with complementary bases attaching to both strands of the DNA.

• Replication results in two identical strands of DNA.

What happens during Step 2 of DNA replication?

• The parent DNA molecule starts to ‘unzip’ at one end.

• Copying of the DNA molecule has begun with complementary bases attaching to both strands of the DNA.

• Replication results in two identical strands of DNA.

What happens during Step 3 of DNA replication?

• The parent DNA molecule starts to ‘unzip’ at one end.

• Copying of the DNA molecule has begun with complementary bases attaching to both strands of the DNA.

• Replication results in two identical strands of DNA.

The process that produces two daughter cells that are identical to the parent cell. This is the type of cell division involved in growth and repair of the body.

The process that produces gametes (eggs and sperm) that

have half the number of chromosomes of the parent

cell.

Identify the phase of mitosis shown in the diagram.

• Interphase

• Prophase

• Metaphase

• Anaphase

• Telophase