48 CHAPTER 6 



6.7. A father of blood group types M and O has a child of MN and B blood types. What 

 genotypes are possible for the mother? 



6.8. What proportion of the offspring of the following crosses, involving independent 

 segregation, will be completely homozygous? 



a. Aa Bb X Aa Bb 



b. AA BB CC X AA bb cc 



c. Aa BB Cc X AA Bb cc 



d. AA' X A" A'" 



6.9. Why, following independent segregation, would you expect that gametes fertilize 

 at random with respect to their genotypes? 



6.10. Discuss the particulate nature of the genetic material. 



6.11. Does the discovery of independent segregation affect your concept of gene size? 

 Explain. 



6.12. Discuss your current understanding of the term "genetic recombination." 



