21. Recall that MPF (Mitosis Promoting Factor) is a complex of M cyclin: M Cdk.  Based on this, which timepoint below would represent M phase of the cell cycle?

31. Human gametes contain? 

39. MenAlien Grey skin and 4 fingers are recessively inherited traits to green skin and 3 fingers on the Planet Reticulin. If a Reticulin Alien is heterozygous for both of these traits which of the following gametes can it produce?  (use the letters G(g) and F(f) to denote these alleles and remember to FOIL!)

39. MenAlien Grey skin and 4 fingers are recessively inherited traits to green skin and 3 fingers on the Planet Reticulin. If a Reticulin Alien is heterozygous for both of these traits which of the following gametes can it produce?  (use the letters G(g) and F(f) to denote these alleles and remember to FOIL!)

31. Human gametes contain? 

28.  Consider the following representation of four chromatids during prophase.  The paternal homologue is in upper case.  The maternal homologue is in lower case.    A B C D E F G A B C D E F G a b c d e f g a b c d e f g   During Anaphase I of Meiosis, how will the above chromosomes separate to the first 2 daughter cells?

56. In which of the following types of cells would you expect to see a barr-body as a result of X-inactivation? 

7. Which of the following could you NOT determine from looking at a Karyotype? 

57. Down Syndrome is a trisomy (aneuploidy) condition of the 21st chromosome.  Which of the following correctly illustrates this condition? 

52. Color blindness is an X-linked recessive trait. A color-blind woman mates with a male with normal color vision. What % of their sons will be color blind?