Term
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Definition
| Genes that control cell growth and multiplication. Ocogenes may lead to cancer if they are altered by agents known as Carcinogens. |
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Term
Trisimy 21 (down syndrome) |
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Definition
An extra 21st chromosome. round face, larger forhead, heart defects, mental retardation, 1 in 600 births, higher risk for mothers over 40 to have a down syndrom baby. |
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Term
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Definition
refers to twice the number of chromosomes in a gamete. from 23 to 46 chromosomes. |
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Term
| semi-conservative replication |
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Definition
| Each strand of DNA serves as a template for the creation of it's complementary strand. Every new molecule of DNA has one origional strand and one new parent strand. |
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Term
What does each neucleotide contain? |
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Definition
- phosphate group - backbone of DNA molecule
- Sugar (deoxyribose) - glue that connects the phosphates in the backbone
- Nitrogen Base - 4 types (adenine, thymine, cytosine, guanine)
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Term
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Definition
ordered display of chromosomes from largest to smallest with the sex chromosomes last. |
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Term
| What is the general process of Karyotyping? |
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Definition
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Term
Who is responsible for the shape of DNA? Who is responsible for the structure of DNA? |
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Definition
Rosalind Franklin - produced an X-ray diffraction pattern of DNA that suggested it was the shape of a double helix James Watson - deduced the structure of DNA. |
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