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A particular Drosophila female that is wild-type in appearance is known to be heterozygous for the three recessive mutations black body (b), curved wings (c) and purple eyes (p). When this female is testcrossed, the following progeny result:Black body, purple eyes - 27Curved wings -23Black body, curved wings - 361Purple eyes -379Black body - 92Curved wings, purple eyes - 108Wild type - 6Black body, curved wings, purple eyes - 4
a. Determine the order of these three genes on chromosome 2 of Drosophila. Diagram the allelic arrangement of these three genes on the two homologs carried by the heterozygous female used in this testcross. Indicate the correct gene order.
b. Determine the map distances between these loci. Show your calculations.
c. Determine an interference value for this genetic interval. Show your calculations.
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Think about the following genotypes, Yy Ss Tt, Determine how many different gamete combinations can be produced?
How long would the channels need to stay open in order to raise the cytosolic Ca++ concentration from 100 nM to 4 microMoles?
How does cell division differ between animal and plant cells.
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