11586594
Description
Flashcards by lily bevan, updated more than 1 year ago
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Created by lily bevan
over 6 years ago
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| Question | Answer |
| What is a genome? | All the genetic material of an organism. |
| What is an example of a feature that is a result of only your environment? | A scar. |
| What is an example of a feature affected by both genetic information & environment? | Body mass. |
| How can the environment affect the genome? | The environment outside a cell can affect molecules on the cell surface. this can start a chain reaction of changes in the cell cytoplasm, eventually affect how the information in the genome is used - affect your features. |
| Where is the genetic material in animals found? | Inside the nucleus. |
| What are organisms w/ a nucleus called? | Eukaryotic Organisms |
| What are organisms w/out a nucleus called? | Prokaryotic Organisms |
| Where is genetic information held in prokaryotic organisms? | The cytoplasm, & sometimes plasmid. |
| What is a plasmid? | a small loop of genetic material. |
| What is genetic material stored as? | Chromosomes |
| How many chromosmes are in the human nucleus? | 46 (23 pairs) |
| What are chromosomes? | Very long molecules of DNA |
| When and by who was DNA discovered? | In 1953 by James Watson & Francis Crick ( After interpreting a photo by Rosalind Franklin & Maurice Wilkins ) |
| How is DNA arranged? | 2 strands twisted together to form a double helix |
| What is DNA made from? | Lots of small molecules (nucleotides) joined together. |
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