When the number of recombinant progeny is usually less than the number expected in independent assortment it is called
Complete linkage
Incomplete linkage
Complete recombination
Complete independent assortment
Mirabilis jalapa is a good example of
___$(B)$___ used the frequency of recombination between gene pairs on the ___$(A)$___ as a measure of the distance between genes and mapped their position on the chromosome
$(A) \;\;\quad\;\;(B)$
In a cross between white-flowered parents, $F_1$ progeny was uniformly purple-flowered. The $F_2$ progeny showed a phenotypic ratio $9 : 7$ between purple-flowered and white-flowered plants. The above result indicates that the flower colour is controlled by
Who was the scientist to introduce $ABO$ blood groups
Loss of a $X$ chromosome in a particular cell during its development, results into