Hyper-IgM syndrome is a rare genetic disease caused by a loss-of-function mutation in the gene that codes for the CD40L protein. What are the two most likely direct effects of CD40L deficiency? a. Increased recruitment of neutrophils into inflamed tissue.
b. Reduced recruitment of neutrophils into inflamed tissue.
c. Reduced phagocytic function of macrophages.
d. A failure of the germinal center reaction.
e. A loss of IFN-γ function.

Which statement is not an accurate description of meiosis? a) meiosis produces offspring that are genetically diverse. b) meiosis produces offspring that are identical to the parent. c) in sexual reproduction half of the genetic material comes from the father (sperm) and half of the genetic material comes from the mother (egg). d) meiosis decreases the number of chromosomes by half so that when a sperm fertilizes an egg, the resulting zygote has the correct number of chromosomes.