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Mendelian Inheritance Study Using Pea Seeds - Testbook.com

Last Updated on Jul 31, 2023
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Objective

The aim of this exercise is to understand Mendelian inheritance by observing and categorizing seeds of a plant based on their colour and size.

Required Materials & Equipment
  • Petri Dish
  • Enamel Tray
  • Sample of Plant Seeds

Method
  • Put 100 seeds of a plant in an enamel tray.
  • Sort the seeds into groups based on their shape (round or wrinkled) and place them in separate Petri dishes.
  • Record the number of round and wrinkled seeds and calculate their ratio.
  • Repeat the above steps for other distinct traits, such as the colour of the seeds.

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Observations
  • Construct a table depicting the traits of the seeds, the total count observed, the count of seeds with contrasting traits, and their ratio.
( Example ) Serial Number Traits Total number of seeds Seeds displaying contrasting traits Ratio
1 Seed Shape xxx (X) round seeds; (Y) wrinkled seeds X: Y
2 Seed Colour xxx (X) green seeds; (Y) yellow seeds X: Y

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Frequently Asked Questions

The aim of this study is to understand Mendelian inheritance using seeds of different colours/sizes of any plant.

The materials needed for this study are a Petri dish, an enamel tray, and pea seed samples.

The procedure involves placing pea seeds in an enamel tray, separating them into round and wrinkled, noting down their numbers and calculating their ratio. The same procedure is repeated for other contrasting traits such as the colour of the seeds.
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