Which model would predict the abrupt appearance of a new species in the fossil record, with little or no evidence of
intermediate forms?
a. anagenesis
b. gradualism
c. microevolution
d. paedomorphosis
e. punctuated equilibrium
e
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Knight followed up on attempts of English farmers to improve varieties of agriculture with his studies on garden peas. When he crossed two true-breeding varieties, he found all of the following: Check all that apply.
_____ All the F1 offspring had the dominant trait. _____ If both parents have the same trait, then all of their offspring will also have that trait. _____ Some F2 offspring had the dominant trait and some had the recessive trait. _____ Among the F2 offspring, more had the dominant trait and fewer had the recessive trait.
How does water pass through membranes?
a. facilitated diffusion b. Water cannot pass through membranes. c. passive diffusion d. active transport
The endosymbiotic hypothesis is generally accepted as the origin of two eukaryotic organelles: mitochondria and chloroplasts.
Answer the following statement true (T) or false (F)
The normal use of restriction enzymes by bacteria is to ____
a. integrate viral DNA b. cut apart short sequences of bases in DNA c. repair "sticky ends d. copy the bacterial genes e. clone DNA