1
Q
why is a DNA a ‘double helix’
A
We call it a double helix because it has two strands
2
Q
genome
A
entire set of genetic material in an organsim
* identical twin have the smae genome
3
Q
what can we do with the genome
(3)
A
- trace the migration of our ancestors
- treatment for inherited disorder
- understanding anestry
4
Q
Chromosomes exist in pairs. The chromosomes in the 23rd pair are known as what?
A
Sex chromosomes
5
Q
chromosome notes
A
Remember that chromosomes only have an ‘X’ shape when the DNA has been duplicated ready for cell division. The rest of the time, they will look more like like an ‘l’.
6
Q
Gene
A
small section of DNA that codes for a specific protein
genes can cause specific diseases. We call these inherited diseases.
7
Q
A
biology gcse
flashcards
Decks in class (27)
# Cards
-
Circulatory System24
-
bloods3
-
coronary heart disease16
-
Organisation and Exchange – Revision Questions8
-
Organisation and Digestion – Revision Questions17
-
Non-Communicable Disease.31
-
diseases38
-
cell biology22
-
educake - Photosynthesis; Aerobic and anaerobic respiration and Exercise and metabolism69
-
AQA booklet13
-
plant2
-
mocks17
-
bio paper 138
-
bio paper 120
-
Bio - paper 229
-
DNA basics19
-
ecology gcse25
-
classification gcse6
-
Genetics and inheritance (educate)39
-
reproduction and genetics24
-
selective breeding3
-
Genetics and inheritance14
-
Reproduction 1 and 2 (educake)42
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edukake - Waste management and recycling and Land use and deforestation25
-
educake - Communities and Distribution of organisms5
-
educake = Homeostasis and the nervous system; The human endocrine system: blood glucose levels and Human reproduction94
-
bio paper 27
