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testcross

n.
1.a cross between an organism whose genotype for a certain trait is unknown and an organism that is homozygous recessive for that trait so the unknown genotype can be determined from that of the offspring

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Word of the Day

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  • testamentary trust
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  • testament
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  • testicle
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  • testicular
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  • testicular artery
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  • testicular cancer
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  • testiere
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  • testifier
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  • bouquet
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  • esotropia
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  • family psocidae
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  • stink
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  • instance
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  • protein molecule
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  • wild cotton
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  • hypoplastic anemia
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  • marauder
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  • chow mein
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    Idiom of the Day

    in step with (someone or something)
    marching with the same rhythm as someone else, in agreement with the others in a group
    All of the members of our group were in step with each other regarding the New Year's party.



    1.
    The subject ________ of the film concerned the American Civil War in the 1860's.

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