Study Questions after midterm II.doc

Study Questions - Keen 2B Study Questions before the final exam 1 Suppose you hear crickets chirping Males call to attract females One set of

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Keen 2B Study Questions before the final exam 1. Suppose you hear crickets chirping. Males call to attract females. One set of sounds has a series of short chirps followed by a long pause. The other set of sounds has three long chirps and a short pause. The field guide says that there are two closely related species present. Which of the following is likely? a) female crickets search for males visually b) the two cricket species are mechanically isolated c) the two cricket species are temporally isolated d) female crickets identify the species of male by the call e) spatial isolation keeps these two species apart 2. Still thinking about the crickets from question 1, suppose that females occasionally select a male of the wrong species as a mate. Which of the following would still allow two distinct or “good” species of crickets to persist? a) high survival and reproduction of hybrid offspring b) hybrid breakdown c) hybrid sterility d) b and c e) a, b, and c 3. If there is an error in meiosis so that a gamete has more than the typical number of chromosomes, and this gamete fuses with another just like it, the resulting zygote would be: a) haploid b) diploid c) triploid d) polyploid e) multiploid 4. The earliest horses are known from fossils to be small dog-like animals in genus Hyracotherium . Over evolutionary time there has been a steady change in the position of the feet while running. The number of toes on the ground has been reduced from 5 to 3 to 1. This kind of change within a single lineage is called: a) stasis b) extinction c) anagenesis d) cladogenesis e) speciation
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Keen 2B 5. What is a sister taxon? a) the ancestor of two modern species b) the part of a lineage that did not go extinct c) two species that live in the same place d) half of a lineage that split during cladogenesis e) the opposite of a brother taxon 6. A cladogram is: a) a graphical representation of ancestors and descendants b) a hypothesis about evolutionary relationships among taxa c) an illustration of the branching pattern of chromosomes d) a and b are true e) a, b, and c are all true 7. There are both white-crowned and golden-crowned sparrows in Davis. The golden crown is larger and has a distinct yellow stripe on its head. If these birds belong to different species, then white crowns should not: a) produce fertile offspring b) mate with golden crowns and produce persistent fertile offspring c) be found in flocks with golden crowns d) reproduce in the same season as golden crowns e) share a common ancestor with golden crowns 8. .Why would a paleobiologist be interested in the fact that the sediment layer dated to 65 million years ago is rich in iridium at many sites around the world? a)
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 01/21/2012 for the course ECON 2a taught by Professor Xi during the Spring '11 term at Cornell College.

Page1 / 9

Study Questions - Keen 2B Study Questions before the final exam 1 Suppose you hear crickets chirping Males call to attract females One set of

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online