Which radical idea did Cuvier propose based on his studies of Earth’s history?
a. extinction of species
b. evolution of species
c. Earth as billions of years old
d. an unchanging Earth
e. static species composition
ANSWER: a
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A method called _____ uses diagrams to group species based on their shared characteristics
a. taxonomy b. cladistics c. phylogeny d. comparative morphology e. exaptation
Select the pairing that is incorrect
a. disaccharide – two sugar subunits b. monosaccharide – one sugar subunit c. polysaccharide – three (only) sugar subunits d. polysaccharide – three or more sugar subunits
Eyelash length is an inherited trait. In the human population, there is an eyelash length gene. There are two possible variants of this gene-an allele for long eyelashes (> 1cm) and an allele for short eyelashes (1 cm or less). How many eyelash length alleles does an individual have in one of her/his somatic cells?
A. 46 B. 3 C. 2 D. 23 E. 1
You are a botanist who is immersed in your attempt to increase a certain property in your plant of study. To that end, you induce a mutation that doubles the amount of vascular cambium (a type of meristem) in your plant. Assuming this brings the desired effect, what exactly was the property that you sought to increase?
A. production of new leaves B. production of only xylem to make wood C. production of secondary xylem and phloem D. production of bark only E. production of new growth at the tip of stems