How many copies of each gene are present in these skin cells at G1 of interphase?
A. 2
B. 4
C. 6
D. 8
A
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In disruptive selection, over time
A. a population increases its variation (e.g., a wide selection of all beak sizes). B. the population is strongly selected for in two directions (e.g., larger beak size and smaller beak size). C. a population goes extinct. D. the most extreme outliers of a population are eliminated (e.g., the largest beaks and smallest beaks are eliminated). E. the population is strongly selected for in one direction (e.g., larger beak size).
The cytoskeleton
A. helps maintain cell shape. B. anchors organelles. C. provides architectural support. D. functions in movements of the cytoplasm. E. All of the choices are correct.
Identifying an individual by his or her DNA is referred to as ____
a. structural genomics b. genomic fingerprinting c. RNAprofiling d. DNA profiling e. individual genomics
At the bottom or base of a pyramid of energy are the
a. primary producers. b. secondary producers. c. primary consumers. d. secondary consumers. e. tertiary consumers.