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| discovered DNA as we know it using xray |
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| made a model of DNA (double-helix) |
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| sugar (deoxyribose)-phosphate |
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| Rails of DNA made of __________ |
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| Adenine, Thymine, Guanine, Cytosine |
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Step 1: DNA whole
Step 2: Unzips
Step 3: copies are made matching strands
Step 4: New sugar-phosphate rails made |
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| All of your characteristics (traits) are in your DNA |
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| the part of DNA that tells it which protein to make. |
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| different forms a gene may have for a trait |
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| An organism that always produces the same traits in its offspring is ___ |
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| the passing of traits from one parent to the offspring |
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1. Traits are controlled by alleles on chromosomes
2. An allele’s effect is dominant or recessive
3.different alleles for a trait move into separate sex cells |
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| Neither allele for a trait is dominant |
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| More than two alleles for a trait |
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| A group of gene pairs acts together to produce a trait |
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| Genes that are altered or copied incorrectly |
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| cause by more or fewer chromosomes than normal. |
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| caused by an extra copy of chromosome 21 |
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| Recessive Genetic Disorders |
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| Female produce eggs with an ___ chromosome |
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| Males produce sperm with ___________ |
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| An allele inherited on an X or Y chromosome |
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| follows a trait through generations of a family |
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