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Question

The table below shows qualities of two varieties of coconut.

VarietyLife SpanDisease ResistanceYield inA: Chavakkad Orange3035 yearsHigh45 yearsB: Lakshadweep80100 yearsLow68 years


Suppose a new variety is formed by incorporating the gene for disease resistance from Chavakkad orange variety to Lakshadweep variety. What set of characters will the new variety show?


A

Life span: 30-35 years, Disease resistance: high and yield in: 4-5 years

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B

Life span: 80-100 years, Disease resistance: high and yield in: 6-8 years

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C

Life span:60-70 years, Disease resistance: medium and yield in: 5-7 years

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D

Life span:80-100 years, Disease resistance: low and yield in: 6-8 years

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Solution

The correct option is B

Life span: 80-100 years, Disease resistance: high and yield in: 6-8 years


When a gene for a particular character is incorporated into an organism, it retains the original characters and additionally shows the character controlled by the inserted gene. In this case, the gene for disease resistance from variety A (Chavakkad orange) is incorporated into variety B (Lakshadweep). Therefore, variety B will retain its original characters i.e 80-100 years of life span and yield in 6-8 years. Additionally, it will show the character controlled by the inserted gene i.e. high disease resistance.

So the new variety will have following set of characters:

VarietyLife SpanDisease ResistanceYields inNew Variety80100 yearsHigh68 years


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