punnett square pedigree meiosis
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each of the black spaces below before clicking
on it to display the answer.
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| Genetics | The study of genes and the inheritance of traits
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| gene | sequence of DNA that codes for a protein and thus determines a trait
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| allele | one of a number of different forms of a gene
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| genotype | genetic makeup of an organism (the letters)
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| phenotype | physical characteristics of an organism
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| true-breeding | term used to describe organisms that produce offspring identical to themselves if allowed to self-pollinate
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| trait | specific characteristic that varies from one individual to another
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| hybrid | offspring of crosses between parents with different traits
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| homozygous | term used to refer to an organism that has two identical alleles for a particular trait
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| heterozygous | term used to refer to an organism that has two different alleles for the same trait
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| independent assortment | independent segregation of genes during the formation of gametes
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| incomplete dominance | situation in which one allele is not completely dominant over another
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| codominance | situation in which both alleles of a gene contribute to the phenotype of the organism
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| polygenic trait | trait controlled by two or more genes
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| pedigree | chart that shows the relationships within a family
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| sex linked genes | gene located on the X or Y chromosome
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| haploid | term used to refer to a cell that contains only a single set of chromosomes and therefore only a single set of genes
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| meiosis | process by which the number of chromosomes per cell is cut in half through the separation of homologous chromosomes in a diploid cell
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| crossing-over | process in which homologous chromosomes exchange portions of their chromatids during meiosis
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| synapsis | the pairing and physical connection of duplicated homologous chromosomes during prophase 1 of meiosis
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| nondisjunction | error in meiosis in which homologous chromosomes fail to separate
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Created by:
Batterbee
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