Question

Test cross ratio shown by a genotype $AabbCC$ will be:

• A. $9:3:3:1$
• B. $1:1:1:1$
• C. $1:1:1:1:1:1:1:1$
• D. $1:1$

Answer 1

The correct option is D $1:1$

Test cross involves crossing an individual with all recessive genotype hence aabbcc.

This cross can be represented by :-

Gametes	AbC	abC
abc	AabbCc	aabbcc

Here, ratio is 1:1.

So, the correct option is '1:1'.