Question

The monohybrid test cross ratio is

• A. 1 : 1
• B. 1 : 1 : 1 : 1
• C. 9 : 3 : 3 : 1
• D. 9 : 3 : 4

Answer 1

Answer: (A)

The cross between recessive homozygous parents and $F$, individual is called test cross. It gives only one type of results, ie, $1:1$.