Dna nucleotides are made up of
a. a sugar group, an amino acid group and a nitrogenous base.
b. a phosphate group, a sugar group and a nitrogenous base.
c. a protein group, a sugar group and a nitrogenous base.
d. a phosphate group, a starch group and a nitrogenous base.

they fuse to form they have half as many chromosomes as a somatic cell of the same individual. b

the statements that apply here about binary star system are

"have stars that might appear to wobble"

"often have one star that is brighter than other"

a binary star is a star system consisting of two stars revolving around their common barycenter. systems of two or more stars are called multiple star systems.