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Starch grain size in garden pea, flower ...

Starch grain size in garden pea, flower colour in 4' O clock plant and heterozygous individual for sickle cell anaemia are the examples of

A

Incomplete dominance

B

Nonallelic interaction

C

Co-dominance

D

Interallelic interaction

Text Solution

AI Generated Solution

The correct Answer is:
To answer the question regarding starch grain size in garden pea, flower color in 4 o'clock plant, and heterozygous individuals for sickle cell anemia, we can analyze each example to identify the genetic principles they illustrate. ### Step-by-Step Solution: 1. **Identify the Traits**: - **Starch Grain Size in Garden Pea**: This trait is influenced by the alleles present. Different alleles result in varying sizes of starch grains. - **Flower Color in 4 O'clock Plant (Mirabilis jalapa)**: This plant exhibits a range of flower colors due to the interaction of alleles, leading to a blending of traits. - **Heterozygous Individual for Sickle Cell Anemia**: In this case, individuals possess both normal and sickle cell alleles, demonstrating a unique interaction between these alleles. 2. **Determine the Type of Inheritance**: - **Starch Grain Size**: This trait is an example of **incomplete dominance**, where the phenotype is a blend of the two parental traits. - **Flower Color in 4 O'clock Plant**: This is also an example of **incomplete dominance**, as the flower color shows a blending effect (e.g., red and white flowers producing pink). - **Heterozygous Individuals for Sickle Cell Anemia**: This is an example of **co-dominance**, where both alleles are expressed equally in the phenotype (normal and sickle-shaped red blood cells). 3. **Summarize the Findings**: - The starch grain size in garden pea and flower color in 4 o'clock plant are examples of **incomplete dominance**. - The heterozygous individuals for sickle cell anemia represent **co-dominance**. ### Final Answer: Starch grain size in garden pea and flower color in 4 o'clock plant are examples of **incomplete dominance**, while heterozygous individuals for sickle cell anemia are an example of **co-dominance**. ---
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