The Cretaceous and Jurassic periods are part of the

A. Archean era
B. Cenozoic era
C. Mesozoic Era
D. Proterozoic era
E. Paleozoic era


C. Mesozoic era

Biology & Microbiology

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Which human cell type can be over a meter in length?

a. neurons b. chondrocytes c. columnar epithelial cells d. skeletal muscle cells e. adipocytes

Biology & Microbiology

A state of extreme sluggishness is known as ____

a. torpor b. endothermic c. migration d. extinction e. reproduction

Biology & Microbiology

The evidence that one species of finch migrated to a Galàpagos island, and evolved into two species now found on the same island, feeding on different food sources, is an example of speciation.

A. postzygotic B. prezygotic C. parapatric D. allopatric E. sympatric

Biology & Microbiology

One of the laws of heredity that Mendel developed was the law of segregation. What does this law state?

A) Both parents pass on their hereditary information to their offspring. B) When a gamete forms, the two alleles that determine a trait separate so that only one of the alleles is present in the gamete. C) A trait can be either recessive or dominant. D) The gene that controls one trait is inherited separately from a gene that controls another trait.

Biology & Microbiology