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RR (red) Antirrhinum majus is crossed wi...

RR (red) Antirrhinum majus is crossed with white (rr) one. Offsprings (Rr) are pink. This is an example of:

A

dominant-recessive

B

incomplete dominance

C

hybrid

D

supplementary genes

Text Solution

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The correct Answer is:
To solve the question regarding the inheritance pattern observed in Antirrhinum majus (snapdragon), we can follow these steps: ### Step 1: Understand the Parent Generation In this case, we have two parent plants: - One homozygous red flowered plant (RR) - One homozygous white flowered plant (rr) ### Step 2: Determine the F1 Generation When these two plants are crossed, the offspring (F1 generation) will inherit one allele from each parent. Therefore, all offspring will have the genotype Rr. ### Step 3: Observe the Phenotype of F1 Generation The F1 generation (Rr) exhibits a pink flower color. This is important because it indicates that the red allele (R) does not completely dominate the white allele (r). ### Step 4: Identify the Inheritance Pattern The fact that the F1 generation is pink (a blend of red and white) suggests that neither allele is completely dominant over the other. This phenomenon is known as **incomplete dominance**. ### Step 5: Conclusion Thus, the crossing of RR (red) with rr (white) resulting in Rr (pink) is an example of incomplete dominance. ### Final Answer This is an example of **incomplete dominance**. ---
To solve the question regarding the inheritance pattern observed in Antirrhinum majus (snapdragon), we can follow these steps: ### Step 1: Understand the Parent Generation In this case, we have two parent plants: - One homozygous red flowered plant (RR) - One homozygous white flowered plant (rr) ### Step 2: Determine the F1 Generation ...
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