Extranuclear inheritance was first described by Carl Correns based on his observations of Mirabilis jalapa (the four o'clock plant). M. jalapa can have either white, variegated (white and green) or green leaves. Pollen from a variegated M. jalapa plant is used to fertilize a white M. jalapa flower. Which of the following phenotypes would you expect to see in the offspring of this cross?
A. White
B. Green
C. Variegated
D. White and variegated
E. White, green, and variegated
A. White
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Discuss the phenomena of immunological tolerance and autoimmune disease
What will be an ideal response?
The diversity among human antigen receptors is attributed mainly to ________
a. structural changes that occur to antibodies after antibodies meet antigens b. random splicing of antigen receptor gene segments c. all of the choices d. large numbers of genes for antibodies
According to scientists, about what percentage of men currently living in Central Asia may be descended from the Mongolian ruler Genghis Khan?
A) 4% B) 8% C) 25% D) 40%
Complex microbial communities that grow tightly adhered to surfaces are called ________.
Fill in the blank(s) with the appropriate word(s).