While collecting a diverse group of finches, Darwin noticed great variability in the shapes of their bills. However, he incorrectly assumed which of the following.
a. that birds on the same island belonged to the same species
b. that birds on the same island did not belong to the same species
c. that birds on different islands did not belong to the same species
d. that birds on different islands belonged to the same species
Answer: d. that birds on different islands belonged to the same species
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Babies who are born following PGD to select for a tissue match to an ailing sibling are referred to as ____________________
Fill in the blank(s) with correct word
The ultimate source of energy for living things is:
a. the Krebs cycle b. fossil fuels c. the sun d. oxygen e. aerobic respiration
The coxal bones are components of the ____
a. pelvis b. femur c. foramen magnum d. sacral curvature e. cranium
Place the following events of the acrosomal reaction in the correct chronological order.(1) The acrosome releases hydrolytic enzymes.(2) Sperm-binding proteins on the membrane bind the sperm.(3) Sperm nucleus enters the egg.(4) Sperm and egg plasma membranes fuse.(5) Sperm contacts the egg's jelly coat.
A. 5,1,2,4,3 B. 5,2,4,3,1 C. 1,5,4,3,2 D. 3,5,2,1,4 E. 1,2,4,3,5