Insect workers propagate more of their own alleles by helping their mother reproduce rather than by reproducing themselves; thus, they share a larger fraction of their ________ with the next generation.
A. home
B. ability to defend their nest
C. food resources
D. time
E. genome
Answer: E
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Island species are particularly vulnerable to extinction for all of the following reasons except
A. humans have altered habitats. B. island species have lost the ability to escape predators. C. humans have introduced competitors. D. humans have introduced diseases. E. fewer endemic species are found on islands.
How do the features of a larval tunicate differ from an adult tunicate? Check all that apply.
_____ Larval tunicates have a conspicuous notochord that is lost by the time they reach adulthood. _____ Larval tunicates have a hollow dorsal nerve cord that is reduced to a ganglion in adults. _____ The tail of a larval tunicate is lost by the time it transforms into an adult. _____ The pharynx of the larval tunicate becomes more prominent in the adult. _____ The larval tunicate lacks an incurrent and siphon but the adult has both structures.
All of the following are considered a main ocean basin except:
a. Pacific. b. Atlantic. c. Mediterranean. d. Arctic. e. Indian.
Which of the following kinds of information can be revealed through a family pedigree analysis?
a. the chromosomal location of disease-related allele b. sex linkage c. the DNA sequence of disease-related allele d. the source of the original mutation in the disease-related allele