Mitosis, DNA, Chromosomes, & Genes

What does DNA do?

• a.  It carries genetic codes from parents to offspring.
• a.  It carries oxygen from the lungs to the body.
• a.  It tells you who you are.
• a.  It defines the organism.

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What is a gene?

• A bundle (like a hot dog bun) that the DNA is packed into
• something inside the nucleus
• a piece of DNA
• all of your DNA

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Heredity is the passing of traits from _____________________ to _____________________

• predators to prey
• water to rain
• parents to offspring
• fungi to protists

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What is a gene?

• An entire chromosome that  codes for a trait
• a piece of clothing
• a piece of a DNA on chromosome that codes for a trait
• Chemical messengers in your brain that code for a trait

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Bundled up, organized DNA is called a

• gene

• trait

• chromosome

• nucleotide

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Guanine bonds with ______________.

• Adenine
• Guanine
• Cytosine
• Thymine

Which of the following best describes a DNA molecule?

• double helix
• contains ribose
• made of amino acids
• contains Uracil

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In mitosis, the two resulting cells are

• different from the starting cell and identical to each other.
• different from the starting cell and different from each other.
• identical to the starting cell and different from each other.
• identical to the starting cell and identical to each other.

What happens in Prophase (choose 3)

• DNA condenses (packs up)

• Spindle fibers appear

• Daughter cells separate

• DNA lines up in middle

• Nuclear envelope (membrane) dissolves

What happens in interphase (choose 2)

• Cell grows and developes

• DNA lines up in middle

• DNA pulls apart

• DNA replicates