NAME

Question types


Start with


Question limit

of 10 available terms

Advertisement Upgrade to remove ads
Print test

4 Written questions

3 Multiple choice questions

  1. Ivy leaf and pine needle
  2. they provide positional information in the embryo
  3. "tinkering" with existing structures

3 True/False questions

  1. The relative lengths of the frog and mouse branches in the phylogeny in Figure 26.13 in your textbook indicate that

    frogs evolved before mice.
    the genes of frogs and mice have only coincidental homoplasies.
    the homolog has evolved more slowly in mice.
    the homolog has evolved more rapidly in mice.
    mice evolved before frogs.
    they provide positional information in the embryo

          

  2. Earth probably formed _____ years ago, and the first life evolved as early as _____ years ago.
    .
    4.5 billion years ago ... 3.9 billion years ago
    Humans observed neither event, so there is no way to tell.
    6,000 years ago ... 6,000 years ago
    3.9 million years ago ... 2.0 billion years ago
    10 billion years ago ... 4.5 billion years ago
    they provide positional information in the embryo

          

  3. Miller and Urey's experiments that attempted to recreate conditions on early Earth were significant because _____.

    they showed how polymers could form spontaneously on a clay substrate
    they showed that organic molecules such as amino acids could be produced from inorganic molecules
    they showed how radiometric dating could be used to give the absolute ages of rocks and fossils
    proved the endosymbiotic theory
    they produced the first protocells
    they showed that organic molecules such as amino acids could be produced from inorganic molecules