Genes that are always "turned on" in a cell are referred to as

A) regulated genes.
B) mutations.
C) inducible.
D) constitutive.
E) catabolic.


Answer: D

Biology & Microbiology

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The surface defenses of the body consist of the ______ and the mucous membranes lining the digestive and respiratory tracts.  

A.  bone marrow B.  skin C.  T cells D.  lymphocytes

Biology & Microbiology

In plants like the fern, haploid cells produced by meiosis divide by ________, forming a multicellular haploid phase.

A. budding B. mitosis C. meiosis D. binary fission

Biology & Microbiology

Which taxonomic rank is least inclusive?

A. family B. genus C. order D. species

Biology & Microbiology

Why are the data shown in Figure 17.7 below consistent, but not conclusive of runaway sexual selection?

What will be an ideal response?

Biology & Microbiology