Individuals best suited to their environment survive and reproduce most successfully. This idea is known as...
a) descent with modification
b) struggle for existence
c) survival of the fittest
d) common descent
Ans: b) struggle for existence
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In an atom, the number of neutrons determines most specifically the ________.
A. chemical properties B. chemical element C. ion state D. isotope
An ascus that contains two parental spores and two nonparental spores is called a tetratype
Indicate whether the statement is true or false
Animals with the kind of body cavity that forms between the endoderm and mesoderm, such as nematodes, are called
A. semicoelomates. B. acoelomates. C. pseudocoelomates. D. coelomates.
A gene that is located on a sex chromosome (X or Y chromosome) is _______.
A. the cause of albinism and cystic fibrosis B. a sex-linked gene C. a linked gene D. usually a sex-determining factor