Cancer, mitosis and gene review!

What is cancer?

• Uncontrolled cell division/growth

• Cell division (mitosis)

• Growth and repair

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Which types of cells do not undergo mitosis?

• Body cells like skin and stomach cells

• Sex cells like egg and sperm cells

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What is the purpose of mitosis?

• Growth and repair

• Cellular power generation

• Sexual reproduction

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Does the cell duplicate (make copies) of its DNA (chromosomes) before or after mitosis?

• Before (which would be interphase)

• After (during mitosis)

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What would we expect to be similar and different in the cell cycles of normal and cancerous cells?

• Cancerous cells do not pass on their genetic material during mitosis, but normal cells do

• Cancerous cells will spend less time in interphase and more time in mitosis compared to normal cells

• Normal cells will only be in interphase and will not go through mitosis, but cancer cells will go through mitosis

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Will a cancer cell do more or less mitosis than a normal cell?

• More because cancer is uncontrolled mitosis (cell growth/division)

• Less because cancer prevents cells from dividing/doing mitosis

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True or false: a gene is a segment of DNA on a chromosome that determines a specific characteristic of an organism

• True

• False

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Which is bigger? A gene or a chromosome?

• Gene

• Chromosome

Which is bigger? A chromosome or a genome (collection of chromosomes)?

• Genome

• Chromosome

Generally speaking, are genes of the same function/category (for example, brain genes) found on the same or different numbered chromosomes?

• Same

• Different