Answer:
A genetic factor for a trait that is always expressed when it is present is best described as dominant.
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Answer:
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<em>Science</em><em> </em><em>is a study of nature human</em><em> </em><em>beings plants animals chemicals and machines</em><em> </em>
<em>and</em><em> </em><em>pHySiCs is a part of science</em><em> </em>
<em>✍️</em><em>HOPE</em><em> </em><em>IT HELPS YOU</em><em> </em><em>✍️</em>
A DNA molecule is like a ladder because there are two sides (the sugar-phosphate backbones of the two strands) and rungs (each rung being a pair of complementary bases). Twisted, because the molecule is twined in a coil called a helix - or rather, a double helix because there are two strands.