TLS Online TPP Program

#Question id: 4906


Shell coiling is a maternal effect phenotype controlled by S gene where S is dominant dextral phenotype over s sinistral phenotype. Dextral coiling Ss male snail was cross with sinistral coiling ss female snail, The phenotype of progeny is 

#XL - T Zoology
  1. all dextral        

  2. All sinistral

  3. Dextral and sinistral phenotype ratio of 3:1 in their offspring

  4. Dextral and sinistral phenotype ratio of 1:1 in their offspring