What average global total fertility rate is needed for zero population growth?

A. 1
B. 2
C. 2.3
D. 2.59
E. None of the choices are correct


C. 2.3

Biology & Microbiology

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You want to determine the function of a vertebrate gene by creating a mutant strain. What model organism would be most suitable?

A. C. elegans B. Arabidopsis C. sea urchin D. Brachydanio rerio E. Drosophila melanogaster

Biology & Microbiology

What is polyploidy?

a. less than the correct number of chromosome sets b. an extra chromosome 21 c. more than the correct number of chromosome sets d. a missing sex chromosome

Biology & Microbiology

________ have been defined as communities of organisms and their physical and chemical environments that function as self-regulating units.

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology

Dideoxy nucleotides are used in which of the following processes?

A. transformation B. making a recombinant plasmid C. microarray analysis D. PCR E. DNA sequencing

Biology & Microbiology