If two genes are homologous, then it can be said that they are
A. derived from different ancestral genes but have a similar function.
B. derived from the same ancestral gene.
C. found only outside the nucleus in the mitochondrion or chloroplast.
D. derived from different ancestral genes and have different functions.
E. related through environmental natural selection.
B. derived from the same ancestral gene.
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The enzyme amylase can break glycosidic linkages between glucose monomers only if the monomers are the ? form. Which of the following could amylase break down?
A) starch B) cellulose C) chitin D) starch and chitin only E) starch, cellulose, and chitin
Perennials are ________.
A. flowering plants to live for two years B. flowering plants that live for one year C. a type of gymnosperms D. flowering plants that keep on reproducing for many years
When the population growth of the predator = 0, is the prey population increasing or decreasing?
a. It is always decreasing. b. It is always increasing. c. At the upper point it is decreasing and at the lower point it is increasing. d. At the upper point it is increasing and at the lower point it is decreasing.
____ are NOT composed of microtubules.
A. Cilia B. Flagella C. Chromosomes D. Centrioles