In a growing population, the youngest age classes have
A. the highest number of deaths/year.
B. the fewest individuals.
C. the most individuals.
D. the smallest number of deaths/year.
E. the most individuals and the largest number of deaths/year.
C. the most individuals.
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A true breeding black rabbit is crossed with a true breeding white rabbit. If blending inheritance were true, which of the following would represent the expected phenotype of an F2 generation consisting of 8 individuals?
A. 8 black rabbits, 0 white rabbits, 0 grey rabbits B. 2 black rabbits, 2 white rabbits, 4 grey rabbits C. 0 black rabbits, 0 white rabbits, 8 grey rabbits D. 4 black rabbits, 2 white rabbits, 2 grey rabbits E. 6 black rabbits, 2 white rabbits, 0 grey rabbits
What key words does the question contain and what do they mean?
What will be an ideal response?
The time interval used to measure the absolute age of rocks by radiometric dating is called the ____
a. radioisotope unit b. radiometric unit c. radiometric life d. radioisotope life e. half-life
Follow the instructions in the procedure for identifying hydrogen bonds. How many hydrogen bonds are there between adenine and thymine?
a. none b. one c. two d. three