As a population geneticist, you find a species of snails with more genetic diversity than humans. What does this mean?
A. The snails have more genes on their
chromosomes than humans.
B. There is more variety in gene pool of snails
than humans.
C. The snails have more DNA than humans.
D. The snails have more mutations occurring
than humans.
E. There is not enough information to answer
the question.
B
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All plants have two multicellular phases, one diploid and one haploid, a phenomenon called ____
a. alternation of generations b. double fertilization c. polyploidy d. mitosis e. dysploidy
The sequence of cells produced during oogenesis is ____
a. oogonium ? primary oocyte ? secondary oocyte ? ootid ? egg b. oogonium ? ootid ? primary oocyte ? secondary oocyte ? egg c. primary oocyte ? secondary oocyte ? oogonium? ootid ? egg d. ootid ? oogonium ? secondary oocyte? primary oocyte ? egg e. secondary oocyte ? primary oocyte ? oogonium ? egg ? ootid
The Cambrian explosion refers to Earth's historical benchmark of life involving the
A. appearance of fossils for all major phyla of animals. B. origination of life, when the progenotes formed the first cells. C. All of the answer choices are correct. D. mass extinction of the nonavian dinosaurs. E. development of the first multicellular organisms.
A distinctive red rash on the cheeks with an otherwise mild illness is most likely
A) rubella. B) measles. C) fifth disease. D) roseola. E) chickenpox.