DNA and genes

Which of the following best describes a DNA molecule?

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

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Chromosomes are made of

• DNA

• genes

• proteins

• traits

What are the structures in this image called?

• chromosomes

• centromere

• sister chromatids

• chromatin

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Eye color, hair color, having freckles, etc. are examples of:

• DNA

• Chromosomes

• Genes

• Traits

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The part of the cell that contains chromosomes and genes is the:

• Mitochondria

• Nucleus

• Chloroplast

• Ribosomes

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The traits of an organism are passed to its offspring on small coded strands of DNA material called

• meiosis
• recessive traits
• genes
• heredity

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An inheritable characteristic that id determined by DNA is known as a _____.

• DNA

• nucleus

• trait

• protein

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_______ are sections of DNA that regulate protein and code for specific traits.

• Genes

• Chromosomes

• Proteins

• Mutations

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The number of human chromosomes is

• 23

• 46

• 92

• 64

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How are similarities passed from parent to offspring?

• through teaching
• through learning
• through blood
• through genes

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