3.2 State whether each of the phrases applies to A only, B only, both A and B or none. Write down A only, B only, both A and B
or 'none' next to the question number.
For example, 3.2.6 None

3.2.1 Mitosis
A cloning
B chromosomes

3.2.2 Chromosome
A chromatid
B spindle fibre

3.2.3 Phases in the cell cycle
A interphase
B mitosis

3.2.4 Tumour
A benign
B malignant

3.2.5 Bone cancer
A carcinoma
B leukaemia​

3.2.1. A only

3.2.2. A only

3.2.3. A and B

3.2.4. A and B

3.2.5. None

Explanation:

- 3.2.1

Mitosis is a kind of cellular division that produces two genetically identical daughter cells. Whereas, cloning is a technique used to create identical cells. This means that mitosis applies to cloning.

- 3.2.2

A chromatid is a half of a replicated chromosome. Together, a replicated chromosome is called SISTER CHROMATIDS. One of them is called a Chromatid. Spindle fibre is a structure involved with the division of the genetic material during cell division.

- 3.2.3

The cell cycle consists of two stages interphase and mitotic phase. Hence, interphase and mitosis are part of the cell cycle.

- 3.2.4

A tumour is a cancerous mass of cells. Tumour can either be BENIGN i.e. not capable of spreading to other parts or MALIGNANT i.e. capable of spreading to other parts.

- 3.2.5

Cancer is an uncontrolled division of cells and can occur in virtually all organs of the body. Bone cancer is a type of cancer that affects the bone cells. However, carcinoma (starts in the skin) and leukaemia (blood cancer) are unrelated to bone cancer.

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