Midterm Sample .pdf - WRITTEN SECTION ANSWERS Th sh is ar...

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1 WRITTEN SECTION ANSWERS BIOL 303 MIDTERM FALL 2013 This study resource was shared via CourseHero.com
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2 Question 2 : (10 marks) In the following diagrams of Drosophila embryos, anterior is to the left and dorsal is uppermost. The dark shading represents protein or mRNA localization. Use the following numbered diagrams to specify the pattern that best fits each description below. (Fill in each blank with a number that best corresponds to the description provided – hint – some patterns might not be used and some might be used more than once) . bicoid mRNA in the unfertilized egg: ____ nanos mRNA in the unfertilized egg: ______ Maternal caudal mRNA at fertilization: ______ Pair-rule gene expression pattern at cellular blastoderm: ______ Expression of the gap gene Krüppel at syncytial blastoderm : ______ Segment polarity gene expression pattern at cellular blastoderm: ______ tailless expression at cellular blastoderm: ______ Krüppel expression in a bicoid mutant: ______
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  • Summer '14
  • DNA, sh, Cell nucleus

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