What were Darwin's two fundamental insights about the process of evolution?

a. The environment selects on variation in the traits of individual organisms; and organisms are in a constant struggle for existence.
b. The environment selects on variation in the traits of individual organisms; and all species have descended from one or a few common ancestors.
c. All species have descended from one or a few common ancestors; and over time populations, not individuals, evolve.
d. Over time populations, not individuals, evolve; and evolutionary change is connected to envi-ronmental fit.


B

Biology & Microbiology

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________ is an intramolecular post-translational process that allows for self-catalytic removal of specific amino acid sequences

Fill in the blank with correct word.

Biology & Microbiology

What are the three events that occur in sexual reproduction that increase genetic variability?

What will be an ideal response?

Biology & Microbiology

In bacteria, the first amino acid inserted into a polypeptide as translation is initiated is?

a. formyl-methionine b. methionine or formyl-methionine c. methionine d. alanine

Biology & Microbiology

Creutzfeldt-Jakob disease is

A. a spongiform encephalopathy of humans. B. also called "Mad Cow disease". C. caused by a chronic latent virus. D. caused by a viroid. E. initiated by an oncogenic virus.

Biology & Microbiology