Which of the following is not a recessive trait in humans?
A. common baldness.
B. red-green color blindness.
C. mid-digital hair.
D. albinism.
E. sickle-cell disease.
Answer: C
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The male gametophyte in flowering plants forms in a ____
a. corolla b. receptacle c. stamen d. calyx e. carpel
Which is an example of the Red Queen hypothesis?
a. As spiders evolve resistance to a viral disease, the virus becomes more virulent. b. Dogs evolve characteristics that are selected by humans. c. Dinosaurs lack the adaptations to survive predation of their eggs by small mammals. d. Horses evolve from a five toed animal to one toe. e. Cats and cows separately, but for similar purposes, evolve scratchy tongues.
Which of the following is not one of the four most abundant elements in the body?
a. carbon b. hydrogen c. oxygen d. nitrogen e. calcium
Amoebas move and feed by using _____.
Fill in the blank(s) with the appropriate word(s).