Question

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(6) (a)Give any three characteristics of pea-plant which made it a suitable material for Mendel's experiments.

(b) List any three pairs of contrasting features of pea-plant studied by Mendel.
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Answer 1

Answer:

Answer (a).

1.Peas had been shown to be true-breeding (all offspring will have the same characteristic generation after generation).

2. Peas exhibit a variety of contrasting traits (purple vs. white flowers; round vs. wrinkled seeds).

3. The shape of the pea flower protected it from foreign pollen. Peas usually reproduce by self-pollination, in which pollen produced by a flower fertilizes eggs in the same flower.

4. Pea plants grow quickly and do not require much space.

Answer (b).

• Pea shape (round or wrinkled)
• Pea color (green or yellow)
• Pod shape (constricted or inflated)
• Pod color (green or yellow)
• Flower color (purple or white)
• Plant size (tall or dwarf)
• Position of flowers (axial or terminal)

Explanation:

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Answer 2

Answer:

1. After they have planted and grown five plants, Mendel asks students how many distinguishing traits they see in the plants. On the next screen, he reveals that there are seven different traits: Pea shape (round or wrinkled) Pea color (green or yellow

• Pea shape (round or wrinkled)
• Pea color (green or yellow)
• Pod shape (constricted or inflated)
• Pod color (green or yellow)
• Flower color (purple or white)
• Plant size (tall or dwarf)
• Position of flowers (axial or terminal)