11644795
Descrição
FlashCards por lily bevan, atualizado more than 1 year ago
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Criado por lily bevan
quase 7 anos atrás
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| Questão | Responda |
| What is a gene? | A region of DNA |
| What is the role of genes? | They contain the instructions that cells use to make proteins. |
| What is strange about 98.5% of your DNA | For a long time it was regarded as junk and thought to have no purpose. |
| What is the believed role of 80% of the 'junk' | To control gene expression - when the information in genes is used to make proteins. |
| What are two types of proteins & what are some examples? | Structural - Collagen (a protein found in connective tissues) Functional - Amylase (an enzyme that speeds up chemical reactions) |
| What are proteins? | Polymers made from amino acids. |
| What are amino acid monomers joined by? | They joined together by chemical bonds. |
| How can amino acids make different proteins? | They can arranged in different sequences. |
| What is phenylketonuria? | A disease which prevents the making an enzyme that break down phenylalanine. |
| Where do you inherit your chromosomes? | Half from your mother, & half from your father. |
| What are 2 copies of a gene called? | Alleles. |
| what is a different version of a gene called. | Genetic variant. |
| What are genetic variants caused by? | small changes in DNA. |
| How do some variants become harmful? | They change the shape of the enzyme, which stops it from working. |
| What is a genotype? | the genetic variants that an organism has make up its genotype. |
| What is an organism's phenotype? | The features that result from genes in the DNA. |
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