Answer: <u><em>The DNA molecule consists of two strands that wind around one another to form a shape known as a double helix. Each strand has a backbone made of alternating sugar (deoxyribose) and phosphate groups</em></u>
<u><em /></u>
Explanation: <u><em>Each DNA strand is composed of nucleotides—units made up of a sugar (deoxyribose), a phosphate group, and a nitrogenous base. Each strand of DNA is a polynucleotide composed of units called nucleotides. A nucleotide has three components: a sugar molecule, a phosphate group, and a nitrogenous base.</em></u>
<u><em /></u>
<u><em>If i'm right Mark Me brain, give 5 stars and a thank you</em></u>
<u><em /></u>
Chromosomes are a DNA molecule, that cannot be seen underneath a microscope. However, the DNA in chromosomes become pushed together during cell division, which then allows scientists to see its material under a microscope.
<span>Polymers of smaller subunits
</span>