Question: 6. Bicoid is a maternally placed mRNA in a Drosophilia (fruit fly) embryo. Bicoid is nomally loca…


6. Bicoid is a maternally placed mRNA in a Drosophilia (fruit fly) embryo. Bicoid is nomally located on the anterior side of the egg and establishes the formation of the anterior structures of the fly (i.e. the head). If bicoid is missing anterior structures will not form (see diagram below). Only one normal copy of bicoid is needed for a nomal embryo (+I- would be normal). If you remember from your genetics this means that bicoid is dominant. A mother completely lacking in bicoid (-) mates with a male who has normal bicoid expression (+/+). All the offspring will be heterozygous for bicoid (+/-) Predict what the offspring will look like? Will they have anterior structures? Why or why not? contains both copies of normal bicoid (++) Tail missing both copies of normal bicoid (-) Tal

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6. Bicoid is a maternally placed mRNA in a Drosophilia (fruit fly) embryo. Bicoid is nomally located on the anterior side of the egg and establishes the formation of the anterior structures of the fly (i.e. the head). If bicoid is missing anterior structures will not form (see diagram below). Only one normal copy of bicoid is needed for a nomal embryo (+I- would be normal). If you remember from your genetics this means that bicoid is dominant. A mother completely lacking in bicoid (-) mates with a male who has normal bicoid expression (+/+). All the offspring will be heterozygous for bicoid (+/-) Predict what the offspring will look like? Will they have anterior structures? Why or why not? contains both copies of normal bicoid (++) Tail missing both copies of normal bicoid (-) Tal

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