Question

Test cross ratio of 1 : 1 : 1 : 1 proves that ___________________.

• A. $F_1$ hybrid produces four different gametes
• B. $F_1$ hybrid is homozygous
• C. Two different progenies are produced by $P_1$ parent
• D. None of the above.

Answer 1

The correct option is A $F_1$ hybrid produces four different gametes

A cross is made between F1 dihybrid and homozygous recessive parent is called dihybrid test cross. F1 dihyrbid during fertilization produces 4 different types of gametes. In the next generation 1:1:1:1 ratio of progeny are formed.

So, the correct option is ‘F1 hybrid produces four different gametes’.