Why does it deviate from the normal mendelian ratios

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Reference no: EM134034039

Assignment:

You will make a short talk (around 3-4 mins) to first-year university biology students. That means the audience has basic knowledge about genetics (i.e., they know what the laws of Mendelian genetics, monohybrid and dihybrid cross ratios are, but may not be familiar with neo-Mendelian genetics).

Some information searching (the Internet, books, etc.) is necessary to explain the hereditary traits.

Topic:

Fruit shapes of summer squash:

Shapes are controlled by two genes. The shape can be disc, spherical or long. In P1 cross of disc-shaped crossing with long-shaped (both are true-breeding plants), all F1 is disc. Then the F1xF1 cross gives offspring with all three different shapes.

What is the ratio of shapes? Please explain

1. Include a brief background of the particular neo-Mendelian phenomenon.

2. If the question is related to a real-life example in nature, you should explain what the phenotypes are you looking at, and the explanation of how the phenotypes are affected by the gene interaction.

3. Why does it deviate from the normal Mendelian ratios?

4. It is not necessary to explain the biochemical pathways underlying the phenotypes.

5. Prepare slides (~3-4 slides) to support your talk, both your slides and the oral presentation will be assessed.

Reference no: EM134034039

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