Genetics - most important terms
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| gene | a section of DNA that codes for a specific trait
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| meiosis | the cell division which takes place to form sex cells called gametes (sperm and egg cells)
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| fertilization | combination of two gametes (egg and sperm); results in a 2n zygote
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| gamete | haploid sex cell (egg or sperm)
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| asexual reproduction | reproduction using only mitosis; offspring are identical to parent
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| sexual reproduction | reproduction involving meiosis and fertilization; leads to greater genetic variation in offspring
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| alleles | forms of a gene
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| dominant | trait that is expressed over recessive
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| recessive | trait that is hidden when dominant is also present
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| genotype | type of genes; what alleles the organism has for a trait
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| phenotype | physical form; what trait shows in an organism
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| pedigree | family tree diagram showing inheritance of a trait
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| karyotype | visual representation of all the chromosome pairs from an individual organized by size
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Created by:
jdriscoll
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