Which term typically refers to the number of species in a biological system?
a. biodiversity
b. ecosystem diversity
c. biogeography
d. habitat heterogeneity
a. biodiversity
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In electron micrographs, the appearance of the T tubule with the terminal cisternae on either side appears as three circles called a(n) ________.
Fill in the blank(s) with the appropriate word(s).
Crocodiles are living representatives of which of the following lineages?
a. anapsids b. archosaurs c. lepidosaurs d. synapsids e. dinosaurs
Discuss the advantages and disadvantages of self-pollination
What will be an ideal response?
Preimplantation genetic diagnosis is done:a
after in vitro fertilization on cells from the embryo. b. in the womb, before birth. c. after a woman is pregnant, but before the embryo implants. d. with the help of ultrasound. e. before fertilization on the sperm and the egg.