You purchase a black dog from a pet shop that tells you this animal is a purebred and that they will forward its papers to you at a later date. In this breed, black is dominant to white. You mate the dog with a white dog of the same breed. If the dog you purchased was a purebred animal, what approximate percentages of colors should you see in the offspring?
A) 100% black
B) 100% white
C) 50% white, 50% black
D) 75% white, 25% black
E) 25% white, 75% black
A) 100% black
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Most likely, immunology got its start in 1890 when these scientists discovered antibodies while developing a diphtheria antitoxin.
A) Edward Jenner and Louis Pasteur B) Elie Metchnikoff and Robert Koch C) Emil Behring and Kitasato Shibasaburo D) Jonas Salk and Albert Sabin
Since the beginning of the twentieth century, the rate at which ________ and other so-called greenhouse gases have entered the atmosphere has been faster than at any other time in the known history of life on Earth.
Fill in the blank(s) with the appropriate word(s).
These bacteria ferment sugars, produce lactate, and are used for some food production
a. Lactobacillus b. Bacillus c. spirochetes d. Agrobacterium e. cyanobacteria
A group of population members all of the same age is called a ________.
A. deme B. species C. cohort D. tribe