A defining characteristic of allopatric speciation is
a. the appearance of new species in the midst of old ones
b. artificial selection
c. geographic isolation
d. asexually reproducing populations
e. large populations
Answer: c. geographic isolation
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When NADP+ in the light cycle it is , forming NADPH.
A. donates electrons; oxidized B. accepts electrons; reduced C. accepts electrons; stabilized D. accepts electrons; oxidized E. donates electrons; reduced
Which of the following female organisms contain two different sex chromosomes?
a. humans b. fruit flies c. cows d. butterflies e. cats
Insulin directly affects the
a. secretion of saliva. b. storage of proteins. c. secretion of pancreatic juices. d. metabolism of sugar. e. utilization of fat reserves.
Valeria has a serious disorder called fragile X syndrome and her brother does not have the disorder
Her mother does not have the disorder but her father does. What is the most likely inheritance pattern for fragile X syndrome? A. Autosomal dominant D. X-linked recessive B. Autosomal recessive E. Y-linked recessive C. X-linked dominant