Chromosomes Genes and DNA

What are three levels o your genetic code in order from smallest to largest?

• gene, DNA, chromosomes

• DNA, chromosomes,gene

• chromosomes, gene, DNA,

• DNA, gene, chromosomes,

How many chromosomes does a human have in every cell?

• 46

• 23

• 40

• 26

How mny Nucleotides are in the picture?

• 6

• 12

• 2

• 8

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Why is Replication important to YOU?

• to make proteins

• to destroy old cells

• to help you make more cells and grow

• to change genetic code

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What part of cell cycle does DNA Replication take place?

• S phase

• G1

• G0

• Mitosis

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What is a mutation?

• a cell growing normally

• a change in DNA's code

• copying DNA

• the building of proteins

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Which of these can cause a mutation?

• the sun

• chemicals

• radiation

• all of the above

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A gene mutation

• The entire gene is affected multiple times

• one nucleotide in a gene is affected

• the chromosome is affected

• more than one gene is affected

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Study the picture, Why is this a chromsomal mutation?

• one gene is affected

• one nucleotide is affected

• the mutation is beneficial

• More than one gene is changed

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WHat is the complementary DNA strand for GCTTAC

• GCTTAC

• CGAATG

• CATTCG

• TACCGT