What is the backbone of dna? plz asapwhat does a nucleotide consist of

Deoxyribose is the name of the sugar found in the backbone of DNA. two sides of this sugar-phosphate backbone are four nitrogenous bases: adenine (A), thymine (T), cytosine (C), and guanine (G).

The back bone of DNA molecule is made up of deoxyribose (sugar and phosphate- sugar chain).The four nucleotides are nitrogenous bases called Adenine,Guanine , Thymine and Cytosine. Two nucleotides in the DNA are linked together by phosphodiester bond.

the correct answer is: b. pantala flavescens, because these organisms would have a high level of genetic variation due to sexual reproduction.  

because involves two organisms (parents) whose genetic material combines, sexual reproduction leads to genetic variation in new generations of offspring. the offspring is an unique organism, with new genome, more protected with the higher ability to adapted. this process is fundamental to evolution.