Question

If a agouti (CcAa) is crossed with albino mice (ccAA),then many albino mice are produced in resulting progeny?

• A. 4
• B. 9
• C. 2
• D. 3

Answer 1

The correct option is A 4

• The example of coat colour of mice is an example of recessive epistasis.
  
• The cross of progeny is CcAa and ccAA leads to the progeny CcAA, CcAa, ccAA, ccAa.
  
• cc is epistatic over AA and hence, the progeny obtained with albino are ccAA and ccAa.
  
• So, the correct option is '2'.