Principle Of Inheritance And Variation Question 606

Question: In a certain plant, red flowers (R) are dominant to white flowers (r) and tallness (T) is dominant to dwarfness (t). A heterozygous plant (RrTt) is backcrossed with a double recessive plant (rrtt). If the gene loci for colour and size and situated very close together on the same chromosome, the expected percentage of offsprings could be approximately

Options:

A) tall red tall white dwarf red dwarf white 25% 25% 25% 25%

B) 49%, 49% 1% 1%

C) 49% 1% 1% 49%

D) 1% 1% 49% 49%

Show Answer

Answer:

Correct Answer: C

Solution:

Due to linkage new combinations are minimum.