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20 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Who were the 3 scientists who discovered DNA? |
(Rosalind) Franklin, ( Maurice) Wilkins , (James) Watson, and ( Francis) Crick |
Monster, Teacher, Cat, . |
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What shape is the DNA molecule? |
A double-helix |
Big ear |
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What is the DNA molecule made up of? |
Sugar, Phosphate, and nitrogenous bases |
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What is selective breeding |
Choosing animals or plants with desired characteristics and allowing them to breed |
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Name an example of Selective breeding |
An example could be , Dairy farmers choosing female cows which produce a lot of milk with male cows with a good temperament |
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Put the following in order from largest to smallest
Dna Chromosomes Nucleus Gene |
Nucleus, Chromosome, DNA, Gene |
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What is a gene? |
A small section of DNA, these code for a characteristic |
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Long strands of DNA coil up to…. |
Form a chromosome |
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How many chromosomes do a sperm and egg cell contain each |
23 each |
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What is formed after fertilisation? |
A zygote - this has 46 chromosomes |
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What is inherited variation? |
Variation caused by genes we inherit |
Caused |
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Give 3 examples of inherited variation |
Eye colour, hair colour, ear lobe type |
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What is environmental variation |
Variation caused due to interaction with the environment ( could be sun (skin tone), food (weight) etc) |
Caused |
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Give three examples of environmental variation |
Scars, Piercings, Weight |
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What is continuous data |
Normally numerical data that could be put into ranges eg height or length |
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What is discontinuous (discrete) data? |
Involves data that could be put into categories and not numerical eg colour of something |
Cat |
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What can represent continuous data? |
A histogram |
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What can represent Discontinuous ( discrete ) data |
A bar graph |
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Give 2 examples of characteristics which can be both inherited and environmental variation |
Height , may be from genetics but can also be from lack of protein
Weight- may be from genetics or may be due to eating habits |
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What is genetic modification? |
The process of selecting a gene from a particular living thing and transferring it to another |
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