Question -
Answer -
The co-existence of two or more genes in the same chromosome is termed as linkage. If the genes are located close to each other and on the same chromosome, they are inherited together and are referred to as linked genes. If two heterozygous parents exhibit linkage, then the outcome is as follows:
Parents BbLl x BbLl
Genotype Blue long Blue long
Phenotype in F1 in all the possible may exhibit parental characters as the genes are linked completely. With all the possible genotypes in F1 progeny can display blue long type of phenotype in the above-mentioned example. However, if there is an incomplete linkage, the parental combination will comparatively be more than the newer combinations which are less in number.