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To study wing shape and eye colour in Drosophila

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  Practical Notebook Biology Standard XII Biology  Answeres Practical Notebook Standard XII Class-12th science Click here download in PDF 11. To study wing shape and eye color in Drosophila.   Aim:  To study the genetic variation of traits in Drosophila melanogaster.  Requirements: Glass jar, petri dish, banana pieces, muslin cloth, bell jor, slide, coverslips grated series of school, fine, DP%, etc. Procedure L Preparation of culture beds:  Peel the ripe banana fruit.  Discard the skin and mash the fruit into a soupy pulp.   Take a clean sterilized glass jar or Petri dish and place the banana pulp in it.   Add a few grains of yeast.   Keep a small blotting paper to absorb excess moisture from the pulp and also to provide a substratum for the pupation of the larvae.   Many culture beds can be prepared by the above method for the different varieties of a fruit fly.  II The culturing of Drosophila  ...

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