If Every Sexually Reproducing Organism Has Only Two Alleles for Each

question 18

Multiple Choice

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

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Definitions:

Specialized Epithelium

Epithelial tissues that have specific functions and adaptations, such as those in the lining of the gut or the respiratory system.

Urinary Bladder

An organ that receives urine from the ureters and temporarily stores it.

Smooth Muscle

A type of muscle tissue that is not under conscious control and is found in the walls of hollow organs like the intestines and blood vessels.

Proximal Convoluted Tubule

The part of the renal tubule that extends from Bowman’s capsule to the loop of Henle. Compare with distal convoluted tubule.