According to MacArthur and Wilson's island biogeography theory, which of the following would be expected to have the smallest species richness?
A. a small island far from the mainland
B. a large island near the mainland
C. the mainland
D. a small island near the mainland
E. a large island far from the mainland
Answer: A
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Using the product rule, the probability that parents heterozygous for two traits (AaBb) produce an offspring homozygous recessive for the same two traits (aabb) is
A) 1/4. B) 1/8. C) 1/16. D) 1/24.
What is the significance of upright walking?
A) It facilitates circulation. B) It facilitates digestion. C) It provides good posture. D) It frees the hands for gathering and carrying food. E) It facilitates social interactions.
A gene locus is
A. a recessive gene. B. an unmatched allele. C. a sex chromosome. D. the location of a gene on a chromosome. E. a dominant gene.
Which of the following is not true about archaeal ribosomes?
A. Differences in rRNA nucleotide sequences led to the division of the prokaryotes into two separate taxa. B. They may possess ribosome binding sites homologous to bacterial Shine-Dalgarno sequences. C. They have similar antibiotic sensitivities to those of bacteria. D. They are 70S like bacterial ribosomes.