The bones of vertebrate forelimbs are similar because of descent from a common ancestor. These forelimbs can be called ________ structures.
Fill in the blank(s) with the appropriate word(s).
homologous
When structures that look similar arise because of common ancestry, these are known as "Homologous" structures.
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All enzymes are which type of organic molecule?
a. lipids b. minerals c. carbohydrates d. vitamins e. proteins
"Costs" associated with sexual reproduction in plants include all of the following except:a
both male and female plants or structures are required. b. death rates are high among offspring. c. gametes must come together in order for fertilization to take place. d. flowers have adapted to attract pollinators. e. offspring have a fitness equal to that of their parents.
Which of the following is not a layer or coat of the eye?
A. sclera B. collagen fibers C. choroid D. aqueous humor E. retina
Mating practices specific to a species is an example of isolation.
A. gametic B. behavioral C. ecological D. mechanical E. temporal