Study your flashcards anywhere!

Download the official Cram app for free >

  • Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key

image

Play button

image

Play button

image

Progress

1/27

Click to flip

27 Cards in this Set

  • Front
  • Back
Evolution
change in gene frequency through time
Linnaeus
systematics: dichotomous system, defined species and therefore showed evolutionary relationships
Gradualism
evolution proceeds at a slow pace
Uniformitarianism
All pressures act on the whole world at all times
Punctuated Equilibrium
Periods of stasis/change
Lamarck
Acquire a beneficial character (he understood benefits, but not genetics)
Lysenko
Impose hereditary characteristics without genetics, ie bonsai tree
(WRONG!)
Artificial selection/breeding
Lots of different plants can stem from the same one; dogs (foraging, feeding behavior), brocciloflour;
Natural selection, adaptation
Confer advantage to outreproducing others
Mayr's five points (modern synthesis)
1-Population growth potential (need a cap)
2-Population growth stability (equilibrium between growth/resource)
3-Limited resources (can't sustain)
4-Phenotypic Variation
5-Genetic Variation (genetic advantage is a man whose genes are overrepresented in descendant generations (666 kids)
Homology
Shared feature from same origin (same bone in human/cat)
Analogy
Shared feature from different origin (bat/fly/bird wing)
Convergent evolution
Same solutions through different means (analogies)
Vestigial Organs
No purpose now, but had one before: human tailbones, snake's/marine mammals bone structure for legs)
Principle of antithesis
-Opposite positions display opposite meanings (angry/scared dog)
-Bird droppings?
Aposematic coloration
Vs.
Crypsis
Stand out, warning symbol if bad/poisenous
Vs.
Camouflage if vulnerable
T or F:
Darwin integrated Mendelian genetics and his principles of natural selection in developing the modern synthesis
FALSE
Which is the best definition of biological theory
A central unifying concept based upon empirical observations
Blending Model of inheritance
Everyone would look the same over time (WRONG!)
Professor works with what animal
Housefly
Inter sexual selection
between sex (women being choosy)
Intra-sexual selection
Within sex, male to male competition
Which of the following is not an observation or inference on which natural selection is based?
Poorly adapted individuals never produce offspring.
Analysis of forelimb anatomy of humans, bats, and whales shows that humans and bats have fairly similar skeletal structures, while whales have diverged considerably in the shapes and proportions of their bones. However, analysis of several genes in these species suggests that all three diverged from a common ancestor at about the same time. Which of the following is the best explanation for these data?
Natural selection in an aquatic environment resulted in significant changes to whale forelimb anatomy.
Darwin synthesized information from several sources in developing his theory of evolution by natural selection. Which of the following did not influence his thinking?
observations of molecular homologies
In science, the term theory generally applies to an idea that
attempts to explain many related phenomena
Which of the following pairs of structures is least likely to represent homology?
the wings of a bird and those of an insect