The fusion of a sperm cell with two polar nuclei in the ovule forms the:a
cotyledon.
b. endosperm.
c. fertilized egg.
d. zygote.
e. embryo.
B
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The Southern blotting technique for transferring DNA from an agarose gel to a piece of nitrocellulose membrane is named for E. M. Southern, the person who developed the procedure.
Answer the following statement true (T) or false (F)
Among the array of species that make up a community, not all are equally abundant
Indicate whether the statement is true or false
Which statement about a secondary immune response is FALSE?
a. It is a response to an antigen. b. It may occur years after a primary response. c. It involves memory cells. d. It has a longer latent period than a primary response. e. It is stimulated by less antigen than in a primary response.
Sexual reproduction includes
A. mitosis gamete formation, and fertilization. B. mitosis, meiosis, and gamete formation. C. meiosis, gamete formation, and fertilization. D. mitosis, fertilization, and meiosis. E. None of the answers are correct.