If every sexually reproducing organism has only two alleles for each gene, how can there be a range of traits seen for a physical characteristic?

A) There can be more than two variations of a gene in a population.
B) One of the alleles in an organism is expressed at different levels, while the other is turned off.
C) Sometimes one of the alleles works, and other times the other allele works.
D) In a population there are only two variations of a gene, but they are blended differently during sexual reproduction.


Answer: A

Biology & Microbiology

You might also like to view...

For each structure described below, choose the cytoskeletal element that it best characterizes: a. microtubules b. microfilaments c. intermediate filaments

________ the cytoskeletal elements with the widest diameter ________ the cytoskeletal elements with the narrowest diameter _______ double helices of polymerized actin proteins ________ strong fibers of more than a hundred different types ________ hollow tube-like structures made of polymerized tubulin protein dimers ________ proteins in the nucleus which give shape and support the nuclear envelope What will be an ideal response?

Biology & Microbiology

Which level of protein structure ultimately determines all the other levels of structure?

A. primary B. secondary C. tertiary D. quaternary

Biology & Microbiology

Triclosan is a broad-spectrum antibacterial agent used in many household products. It is structurally similar to polychlorobiphenylol, a substrate that binds to the active site of the enzyme sulfotransferase

Based on these facts, you can conclude that triclosan most likely A) acts as a noncompetitive inhibitor. B) functions as an enzyme when sulfotransferase is absent. C) is a competitive inhibitor. D) lowers the activation energy of chemical reactions.

Biology & Microbiology

Which organelle contains enzymes that break down macromolecules, old organelles, and invaders?

Mitochondrion Nucleus Endoplasmic reticulum Lysosomes

Biology & Microbiology