In an ecosystem, the amount of organic matter produced in a given time that is available for heterotrophs is known as
A. daily yield.
B.
gross primary productivity.
C. net primary productivity.
D. effective vitality.
E. net yield.
C. net primary productivity.
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Which of the following represents the expected genotypes of an F1 generation consisting of 8 individuals from a cross of a true-breeding black BB. rabbit and a true-breeding white bb. rabbit?
A. 8 BB, 0 bb, 0 Bb B. 4 BB, 4 bb, 0 Bb C. 2 BB, 2 bb, 4 Bb D. 0 BB, 0 bb, 8 Bb
Haldane pointed out that if he received a certain allele, the chance that one of his brothers would receive that allele would be
A. 100%. B. 50%. C. 10%. D. random. E. 0%.
Most of the time, Rh incompatibility between mother (Rh-) and fetus (Rh+) does not cause fetal health problems with the woman's first pregnancy
Indicate whether the statement is true or false
All cells are enclosed by a plasma membrane that is similar in ________ and ________
A) thickness; composition B) permeability; content C) lucidity; texture D) structure; function