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27 Cards in this Set
- Front
- Back
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What shape is DNA coiled into |
Double helix |
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What is the name of a small section of DNA that codes for a sequence of amino acids |
Gene |
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What is the entire set of genetic material in an organism called |
Genome |
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What is the process called when 2 gametes fuse |
Fertilisation |
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By what process are gametes produced |
Meiosis |
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How many divisions are there in meiosis |
2 |
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What does the 23rd pair of chromosomes in a human decide |
Sex |
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Do all sperm cells carry the Y chromosome |
Yes |
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If an organism has 2 alleles for a particular gene that are the same what is this called |
Homozygous |
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What word describes the combination of alleles for a characteristic |
Genotype |
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For an organism to display a recessive how many recessive alleles must it have |
2 |
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What part of the cell does cystic fibrosis affect |
Cell membrane |
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What type of allele causes polydactyl |
Dominant |
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What word is used to describe differences in characteristics within a species |
Variation |
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What word describes change to an organisms DNA |
Mutation |
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For these animal characteristics say whether they are determined by genes environment or both Eye colour Hight Tattoos |
Eye colour-genes Height-both Tattoos-environment |
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What is the process called by which species evolve |
Natural selection |
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Selective breeding can reduce the gene pool in a population. What causes this |
Inbreeding |
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What does GM stand for in GM crops |
Genetically modified |
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In genetic engineering what are used to cut out a useful gene from an organisms genome |
Enzymes |
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In genetic engineering a cut out gene is inserted into a vector. This is usually a small ring of DNA of a virus or bacteria. What is the name of this small ring of DNA |
Plasmid |
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When fossils form things like teeth and bones are eventually replaced by what as they decay |
Minerals |
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Things like imprints can be pressed into soft materials. What type of fossil does this leave |
Impression |
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The overuse and inappropriate use of antibiotics is making which problem worse |
Antibiotic resistance |
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Who developed the first classification system |
Carl linnaeus |
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In one classification system every organism is given a 2 part Latin name what is this system called |
Binomial |
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What type of trees show how scientists think different species are related to each other |
Evolutionary |
