Test 3 (Sping '11) - NAVIGATION[1.15[1.15[1.15 Q1 Q2...

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

View Full Document Right Arrow Icon
NAVIGATION [1.15] Q 1 [1.15] Q 2 [1.15] Q 3 [1.15] Q 4 [1.15] Q 5 [1.15] Q 6 [1.15] Q 7 [1.15] Q 8 [1.15] Q 9 [1.15] Q 10 [1.15] Q 11 [1.15] Q 12 [1.15] Q 13 [1.15] Q 14 [1.15] Q 15 [1.15] Q 16 [1.15] Q 17 [1.15] Q 18 [1.15] Q 19 [1.15] Q 20 [1.15] Q 21 [1.15] Q 22 [1.15] Q 23 [1.15] Q 24 [1.15] Q 25 [1.15] Q 26 [1.15] Q 27 [1.15] Q 28 [1.15] Q 29 [1.15] Q 30 [1.15] Q 31 [1.15] Q 32 [1.15] Q 33 [1.15] Q 34 [1.15] Q 35 [5] Q 36 [5] Q 37 You scored 32.2 out of 50.25 Question 1 Your answer is CORRECT. Lack's model for clutch size evolution predicts the optimal number of offspring in a clutch as those which produce the most offspring. However, empirical investigations often reveal that organisms do not produce the optimal clutch size his model predicts. This is likely because: a) his model assumes that all offspring receive equal parental investment; they may not because of, for example, kin selection or differential investment needs of male and female offspring. b) his model assumes that there are no carry-over costs among reproductive bouts, yet early reproductive investment can effect future reproductive success directly or indirectly through tradeoffs with parental growth or condition. c) his model uses offspring survival as a metric for fitness which may be invalid because, for example, the production of many surviving but low-quality offspring which consequently have low reproductive success may not be as valuable in the long run as producing fewer, higher quality offspring that have higher reproductive success. d) tests of his model often do not include manipulations of clutch size that fully affect the time or physiological reproductive budget within or among seasons, hence, these tests likely inaccurately estimate the fitness effects of manipulated clutch size. e) All of the above. Question 2 Your answer is CORRECT. As a result of founder effects and drift, an island population of snakes has diverged from the mainland population in color, behavior, and many life history traits. Construction of a bridge
Background image of page 1

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

View Full DocumentRight Arrow Icon
connecting the island to the mainland has brought the differentiated island population back into contact with the mainland population. When snakes from the island and mainland populations meet, they mate and produce viable hybrid offspring with fitness equal to that of the parents. What is the likely fate of these populations? a) Reinforcement will favor the rapid evolution of prezygotic isolating mechanisms. b) Reinforcement will favor assortative mating. c) The populations will fuse to become a single evolutionary unit. d) Hybrid vigor will favor disassortative mating. e) Accurate predictions cannot be made based on the information provided. Question 3 Your answer is INCORRECT. Daphnia are one of many organisms that can reproduce asexually or sexually. Both sexuals and
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 07/27/2011 for the course BIOL 3306 taught by Professor Zufall during the Spring '09 term at University of Houston.

Page1 / 15

Test 3 (Sping '11) - NAVIGATION[1.15[1.15[1.15 Q1 Q2...

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