Question

In a plant, red fruit (R) dominant over yellow fruit (r) and tallness (T) is dominant over shortness (t). If a plant with RRTT genotype is crossed with a plant that is rrtt. Then

• A. 25$\%$ will be tall with red fruit
• B. 50$\%$ will be tall with red fruit
• C. 75$\%$ will be tall with red fruit
• D. All of the offspring will be tall with red fruits

Answer 1

The correct option is D All of the offspring will be tall with red fruits

In the given case, red fruit (R) dominant over yellow fruit (r) and tallness (T) is dominant over shortness (t), a cross between RRTT and rrtt would obtain all RrTt genotypes which would exhibit both dominant phenotypes that is tall with red fruits.

So, the correct answer is 'All of the offspring will be tall with red fruits'